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1

Wu, Hanshuo, Jiangtao Xu, Liangjin Huang, Xianglong Zeng, and Pu Zhou. "High-power fiber laser with real-time mode switchability." Chinese Optics Letters 20, no. 2 (2022): 021402. http://dx.doi.org/10.3788/col202220.021402.

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2

Pokorný, Jan, Bára Švejkarová, Jan Aubrecht, et al. "Holmium-Doped Silica Fibers Combining High Doping and High Efficiency." Optics Express 33, no. 7 (2025): 14843–49. https://doi.org/10.1364/OE.554762.

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We present a 2.1 μm holmium-doped fiber laser, core pumped by a 1.94 μm thuliumdopedfiber laser. The laser is based on an in-house drawn, highly holmium-doped silica fiber(3850 mol ppm). We achieved a high output power up to 22.5 W and at the same time high slopeefficiency of 81% with respect to absorbed pump power with an efficiency optimized resonator.We later optimized the resonator for output power and achieved a holmium core-pumped recordoutput power of 35.4 W with 79% slope efficiency. We simulate a pedestal-cladding-pumpedfiber with the same core composition, which can be used to
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3

Shirakawa, Akira, and Ken-ichi Ueda. "High-Power, High-Brightness Fiber Laser." IEEJ Transactions on Electronics, Information and Systems 124, no. 7 (2004): 1367–74. http://dx.doi.org/10.1541/ieejeiss.124.1367.

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4

Michalska, Maria, Paweł Grześ, and Jacek Swiderski. "High power, 100 W-class, thulium-doped all-fiber lasers." Photonics Letters of Poland 11, no. 4 (2019): 109. http://dx.doi.org/10.4302/plp.v11i4.953.

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In this work, sub-kilowatt, compact thulium-doped fiber laser systems, operating at a wavelength of 1940 nm, have been presented. The continuous-wave laser power generated out of a single oscillator was 90 W with a slope efficiency of 56.7%. Applying a master oscillator – power amplifier configuration, an output power of 120.5 W with a slope efficiency of 58.2% was demonstrated. These are the first results of the works aimed at developing kW-class “eye-safe” laser systems in Poland. Full Text: PDF ReferencesZ. Liu, et al., "Implementing termination analysis on quantum programming", Sci. China
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5

Franczyk, Marcin, Dariusz Pysz, Filip Włodarczyk, Ireneusz Kujawa, and Ryszard Buczyński. "Yb3+ doped single-mode silica fibre laser system for high peak power applications." Photonics Letters of Poland 12, no. 4 (2020): 118. http://dx.doi.org/10.4302/plp.v12i4.1075.

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We present ytterbium doped silica single-mode fibre components for high power and high energy laser applications. We developed in-house the fibre laser with high efficiency of 65% according to the launched power, the threshold of 1.16W and the fibre length of 20 m. We also elaborated the fibre with 20 µm in diameter core suitable for amplifying the beam generated in oscillator. We implemented made in-house endcaps to prove the utility of the fibre towards high peak power applications. Full Text: PDF ReferencesStrategies Unlimited, The Worldwide Market for Lasers: Market Review and Forecast, 20
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6

Zeng, Lingfa, Xiaolin Wang, Yun Ye, et al. "High Power Ytterbium-Doped Fiber Lasers Employing Longitudinal Vary Core Diameter Active Fibers." Photonics 10, no. 2 (2023): 147. http://dx.doi.org/10.3390/photonics10020147.

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Thanks to the advantage of balancing nonlinear effects and transverse mode instability, vary core diameter active fiber (VCAF) has been widely used in high power ytterbium-doped fiber lasers in recent years. Up to now, VCAF has developed from the basic form of the original tapered fiber to the spindle-shaped and saddle-shaped fiber with different characteristics and has been applied in conventional fiber lasers, oscillating–amplifying integrated fiber lasers, and quasi-continuous wave fiber lasers and successfully improved the performance of these lasers. In the present study, a 6110 W fiber l
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7

Grzegorczyk, Adrian, and Marcin Mamajek. "A 70 W thulium-doped all-fiber laser operating at 1940 nm." Photonics Letters of Poland 11, no. 3 (2019): 81. http://dx.doi.org/10.4302/plp.v11i3.928.

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An all-fiber thulium-doped fiber laser operating at a wavelength of 1940 nm is reported. A maximum output continuous-wave power of 70.7 W with a slope efficiency of 59%, determined with respect to the absorbed pump power, was demonstrated. The laser delivered almost a single-mode beam with a beam quality factor of < 1.3.Full Text: PDF ReferencesM. N. Zervas and C. A. Codemard, "High Power Fiber Lasers: A Review", IEEE J. Sel. Top. Quantum Electron. 20, 0904123 (2014). CrossRef D. J. Richardson, J. Nilsson, and W. A. Clarkson. "High power fiber lasers: current status and future perspectives
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8

Kah, Paul, Jinhong Lu, Jukka Martikainen, and Raimo Suoranta. "Remote Laser Welding with High Power Fiber Lasers." Engineering 05, no. 09 (2013): 700–706. http://dx.doi.org/10.4236/eng.2013.59083.

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9

Poncelet, Kentin, Germain Guiraud, Nick Traynor, Adèle Hilico, and Giorgio Santarelli. "Tunable 30W all-fiber laser emitting around 1850 nm." EPJ Web of Conferences 307 (2024): 02033. http://dx.doi.org/10.1051/epjconf/202430702033.

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We have demonstrated a tunable polarization maintaining thulium-doped fiber laser spanning the 1830nm-1880nm range with a fiber-coupled output power as high as 30W CW. The high- power booster stage is made using double clad fibers pumped with 793nm laser diodes.
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10

Liu, Hong, and Wei Da Zhan. "Research on High-Power, High-Speed Laser Modulation and Enlarge Experiment." Applied Mechanics and Materials 721 (December 2014): 579–82. http://dx.doi.org/10.4028/www.scientific.net/amm.721.579.

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A laser modulation and amplification system is designed to meet the demand of long-range space optical communication, which uses the high-speed semiconductor laser to integrate electro-absorption (EA) modulator as a seed source. Two optical fiber amplifier technologies are used. The erbium-doped fiber amplifier (EDFA) and single-mode semiconductor laser pumping are used in the first-level; erbium ytterbium co-doped fiber amplifier (EYDFA) and 2-4 multimode fiber laser pumping with good temperature characteristics are used in the second level, and the control method is automatic gain control. T
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11

Encai Ji, Encai Ji, Qiang Liu Qiang Liu, Zhenyue Hu Zhenyue Hu, Ping Yan Ping Yan, and and Mali Gong and Mali Gong. "High-power, high-energy Ho:YAG oscillator pumped by a Tm-doped fiber laser." Chinese Optics Letters 13, no. 12 (2015): 121402–6. http://dx.doi.org/10.3788/col201513.121402.

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12

Sun, Jiapo, Lie Liu, Lianghua Han, Qixin Zhu, Xiang Shen, and Ke Yang. "100 kW ultra high power fiber laser." Optics Continuum 1, no. 9 (2022): 1932. http://dx.doi.org/10.1364/optcon.465836.

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Based on the self-developed non-photodarkening large mode field gain fiber and the 976 nm wavelength-locked high-power and high-brightness pump source, and using the secondary fiber power combining technology, a high-performance 100kW fiber laser in China was built, realizing high-order mode and non-linear effect suppression. The maximum output power of the laser can reach 101.65 kW, the center wavelength is 1080 ± 5 nm, the spectral bandwidth is (3dB) 5-8 nm, the output fiber core diameter is 400µm, the beam quality BPP is 19.28 mm*mrad, and the laser power instability is ±1.1%. Its laser non
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13

An, Yi, Fengchang Li, Huan Yang, et al. "Single Trench Fiber-Enabled High-Power Fiber Laser." Photonics 11, no. 7 (2024): 615. http://dx.doi.org/10.3390/photonics11070615.

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As a novel design of large-mode-area fiber, the single trench fiber (STF) providing high higher-order-mode suppression with a large mode area for the fundamental mode shows potential for high-power and high-brightness applications. However, the output power of STFs has remained relatively low over the past decade. In this paper, we first conducted a design process for STFs and determined the optimal ratio of the fiber structural parameters. Following this ratio, we fabricated an ytterbium-doped STF and demonstrated an all-fiberized fiber amplifier. The system achieved an output power of 2.5 kW
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14

Cooper, M. A., J. Wahlen, S. Yerolatsitis, et al. "2.2 kW single-mode narrow-linewidth laser delivery through a hollow-core fiber." Optica 10, no. 10 (2023): 1253. http://dx.doi.org/10.1364/optica.495806.

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Antiresonant hollow-core fibers (AR-HCFs) have opened up exciting possibilities for high-energy and high-power laser delivery because of their exceptionally low nonlinearities and high damage thresholds. While these fiber designs offer great potential for handling kilowatt-class powers, it is crucial to investigate their performance at multi-kW power levels. Until now, transmission of narrow-linewidth single-mode lasers at multi-kW power levels through a HCF has not been demonstrated, to our knowledge. Here, we present the delivery of a record 2.2 kW laser power with an input spectral linewidt
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15

Galvanauskas, Almantas. "Fiber Lasers – Advancing the Frontier of High Power Light." EPJ Web of Conferences 307 (2024): 01003. http://dx.doi.org/10.1051/epjconf/202430701003.

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During the last two and a half decades fiber lasers underwent a revolutionary transformation in their power from initially operating at Watt level to currently capable of producing multi-kW beams. This enabled a widespread use of fiber lasers in a wide range of industrial and defense applications. These revolutionary advances in power and energy are continuing, mostly along the path of coherent and incoherent combining of multiple fiber lasers, which exploits the advantage inherent in fiber technologies for monolithic integration to achieve compact and robust systems even with a large number o
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16

Eidam, Tino, Sven Breitkopf, Oliver Herrfurth, et al. "High-power ultrafast fiber lasers for materials processing." Advanced Optical Technologies 10, no. 4-5 (2021): 277–83. http://dx.doi.org/10.1515/aot-2021-0033.

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Abstract State-of-the-art fiber-laser systems can deliver femtosecond pulses at average powers beyond the kilowatt level and multi-mJ pulse energies by employing advanced large-mode-area fiber designs, chirped-pulse amplification, and the coherent combination of parallel fiber amplifiers. By using sophisticated coherent phase control, one or even several output ports can be modulated at virtually arbitrary power levels and switching speeds. In addition, an all-fiber setup for GHz-burst generation is described allowing to access an even wider range of laser parameters. The combination of all th
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17

Limpert, J., F. Roser, T. Schreiber, and A. Tunnermann. "High-power ultrafast fiber laser systems." IEEE Journal of Selected Topics in Quantum Electronics 12, no. 2 (2006): 233–44. http://dx.doi.org/10.1109/jstqe.2006.872729.

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18

Limpert, Jens, Fabian Röser, Thomas Schreiber, Inka Manek-Hönninger, Francois Salin, and Andreas Tünnermann. "Ultrafast high power fiber laser systems." Comptes Rendus Physique 7, no. 2 (2006): 187–97. http://dx.doi.org/10.1016/j.crhy.2006.01.016.

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19

Chen, Xi, Wei Li, Chao Yang, and Ning Yang. "High-power fiber laser combination technology." Frontiers of Optoelectronics in China 2, no. 3 (2009): 264–68. http://dx.doi.org/10.1007/s12200-009-0035-7.

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20

Février, Sébastien, Dmitry D. Gaponov, Philippe Roy, et al. "High-power photonic-bandgap fiber laser." Optics Letters 33, no. 9 (2008): 989. http://dx.doi.org/10.1364/ol.33.000989.

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21

Fan, Chenchen, Tianfu Yao, Jian Wu, et al. "Modal dynamics of random Raman lasing in multimode graded-index fibers." Journal of Physics: Conference Series 2894, no. 1 (2024): 012017. http://dx.doi.org/10.1088/1742-6596/2894/1/012017.

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Abstract Random Raman lasing in multimode graded-index fibers is accompanied by sufficient improvement of the output beam quality in comparison with that for pump radiation resulting in brightness enhancement, however the threshold pump power is rather high. Here we study an opportunity to reduce Raman threshold and to obtain random Raman lasing in laser diode pumped multimode graded-index fiber with enhanced backscattering on artificial fs-inscribed random structures of Rayleigh type (random points) or an array of short fiber Bragg gratings randomly spaced in longitudinal and transverse direc
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22

KAN, Hirofumi, Hirofumi MIYAJIMA, Shinichi FURUTA, et al. "High-Power, High-Efficiency Laser Diodes for Pumping Fiber Lasers." Review of Laser Engineering 31, no. 8 (2003): 519–24. http://dx.doi.org/10.2184/lsj.31.519.

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23

Nassiri, Ali, Hafida Idrissi-Saba, and Abdelkader Boulezhar. "Analysis and Design of Coherent Combining of two Q-Switched Fiber Laser in Mach-Zehnder Type Cavity." Journal of Optical Communications 40, no. 4 (2019): 393–400. http://dx.doi.org/10.1515/joc-2017-0110.

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Abstract In this work, we have developed an analytical model of an actively Q-switched Ytterbium-doped fiber laser by using two coupled cavities with amplifying fibers in Mach–Zehnder interferometer configuration. This oscillator system provides high peak power and high energy nanosecond pulse. The pulse energy is almost twice the energy of an individual fiber laser with a combining efficiency goes up 99%. This concept brings some novel perspectives for scaling the high energy and high peak power of nanosecond pulse fiber laser.
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24

Yu Miao, Yu Miao, Hanwei Zhang Hanwei Zhang, Hu Xiao Hu Xiao, and Pu Zhou Pu Zhou. "High-power diode-pumped ytterbium-doped fiber laser at 1150 nm." Chinese Optics Letters 12, no. 9 (2014): 091403–91406. http://dx.doi.org/10.3788/col201412.091403.

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25

Wen Dai, Wen Dai, Youjian Song Youjian Song, Bo Xu Bo Xu, et al. "High-power sub-picosecond all-fiber laser source at 1.56 lm." Chinese Optics Letters 12, no. 11 (2014): 111402–4. http://dx.doi.org/10.3788/col201412.111402.

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26

Mengli Liu, Mengli Liu, Wenjun Liu Wenjun Liu, Peiguang Yan Peiguang Yan, Shaobo Fang Shaobo Fang, Hao Teng Hao Teng, and Zhiyi Wei Zhiyi Wei. "High-power MoTe2-based passively Q-switched erbium-doped fiber laser." Chinese Optics Letters 16, no. 2 (2018): 020007. http://dx.doi.org/10.3788/col201816.020007.

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27

Li, Feng, Zhi Yang, Zhiguo Lv, et al. "Direct Amplification of High Energy Pulsed Laser in Fiber-Single Crystal Fiber with High Average Power." Crystals 9, no. 4 (2019): 216. http://dx.doi.org/10.3390/cryst9040216.

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A laser master oscillator power amplifier (MOPA) system consisting of a fiber amplifier and a two-stage Yb:YAG single crystal fiber (SCF) is experimentally studied. The nonlinear stimulated Raman scattering (SRS) is avoided by limiting the output power of the fiber preamplifier to 600 mW. Due to the benefit from the low nonlinearity and high amplification gain of the SCF, a laser pulse duration of 16.95 ps and a high average power of 41.7 W at a repetition rate of 250 kHz are obtained by using a two-stage polarization controlled double-pass amplification of Yb:YAG SCF, corresponding to an outp
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28

Niu, Jing Xia, Dong Mei Fei, Jing Li, Wei Zhao, and Jian Yu Gao. "Spectral Characteristic Analysis on Yb3+ Doping Double-Clad Photonic Crystal Fiber." Applied Mechanics and Materials 543-547 (March 2014): 3764–67. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.3764.

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The photonic crystal fiber was applied in high-power laser gain medium, because of its flexible and optical controllability and special structure, which can overcome the design flaws of common optical fibers effectively. This paper studied the Yb3+ doping double-clad photonic crystal fiber. Through the theoretical analysis and numerical simulation, it optimized the structure design, drew the high doping concentration and double-clad fiber samples, analyzed the absorption and fluorescence spectra of fiber core material, and tested the optical fiber spectrum features, which can improve the perfo
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29

Zhang, Haitao, Jiaqi Zu, Xiaozheng Liu, Junyu Chen, and Haozhen Xu. "High Power All-Fiber Supercontinuum System Based on Graded-Index Multimode Fibers." Applied Sciences 12, no. 11 (2022): 5564. http://dx.doi.org/10.3390/app12115564.

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An all-fiber supercontinuum source based on graded-index multimode fibers is reported. The supercontinuum source is based on a homemade mode-locked oscillator and a three-stage picosecond amplifier, which obtained the supercontinuum by a graded-index multimode fiber. The laser output with a spectral range of 480–2440 nm, an average power of 25 W, and a repetition frequency of 8.27 MHz is obtained. To the best of our knowledge, this is the highest average power for generating a supercontinuum with an all-fiber structure based on the graded-index fiber. The effects of GRIN fiber length and diffe
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30

Wang, Xiong, Pu Zhou, Yu Miao, et al. "Raman fiber laser-pumped high-power, efficient Ho-doped fiber laser." Journal of the Optical Society of America B 31, no. 10 (2014): 2476. http://dx.doi.org/10.1364/josab.31.002476.

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31

Liu, Peng, Wanggen Sun, Xiao Sun, et al. "High–Power 792 nm Fiber–Coupled Semiconductor Laser." Photonics 10, no. 6 (2023): 619. http://dx.doi.org/10.3390/photonics10060619.

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The pumping of Tm-doped crystal or fiber by a 792 nm semiconductor laser is an important way to generate a mid-infrared laser, which is widely used in various fields. In this paper, a high–power 792 nm fiber–coupled semiconductor laser module was successfully fabricated with the output power of 232 W at a 10 A continuous current and the electro-optic conversion efficiency of 48.6%. The laser module is coupled with 24 chips into a fiber by spatial multiplexing and polarization combination technology. For a single emitting laser chip, the continuous wave (CW) output power and threshold current a
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32

Valiunas, Jonas K., and Gautam Das. "Tunable Single-Longitudinal-Mode High-Power Fiber Laser." International Journal of Optics 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/475056.

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We report a novel CW tunable high-power single-longitudinal-mode fiber laser with a linewidth of∼9 MHz. A tunable fiber Bragg grating provided wavelength selection over a 10 nm range. An all-fiber Fabry-Perot filter was used to increase the longitudinal mode spacing of the laser cavity. An unpumped polarization-maintaining erbium-doped fiber was used inside the cavity to eliminate mode hopping and increase stability. A maximum output power of 300 mW was produced while maintaining single-longitudinal-mode operation.
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33

Wang, Xiaolei, Xinqiang Ma, Yuan Ren, Jingwen Wang, and Wei Cheng. "Fiber Coupled High Power Nd:YAG Laser for Nondestructive Laser Cleaning." Photonics 10, no. 8 (2023): 901. http://dx.doi.org/10.3390/photonics10080901.

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In this study, a fiber coupled high power side-pumped Nd:YAG laser system for laser cleaning is presented. Based on the two-rod structure and two stages amplifiers, the maximum average output power of 783 W with corresponding pulse energy of 52 mJ at 15 kHz has been achieved. The fiber coupling efficiencies after the master oscillator, one stage amplifier and two stages amplifiers reach to 99%, 98.3% and 94%, respectively. A laser cleaning machine prototype composed of the master oscillator and one stage amplifier with an average output power of greater than 500 W has been developed and achiev
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34

Raghb, Fatma Ayad, and Abdulkareem Hussain Dagher. "High Output Power Holmium-Doped Fiber Laser at 2100 nm." Mustansiriyah Journal of Pure and Applied Sciences 2, no. 3 (2024): 18–23. http://dx.doi.org/10.47831/mjpas.2024.2.3.18-23.

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A theoretical model of three levels describing Holmium-doped fiber lasers pumped by Laser-diodes 1150nm is present. Based on the model, efficiency as well as output power depend on the length of active media, are investigate, using the MATLAB program (R 2019 a). The results shows that output power and efficiency of optical fibers are exponential inverse relationship with increment fiber length, for 1m output power have highest value 100.4W, while efficiency have 44.6% at 0.05m.
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Raghb, Fatma Ayad, and Abdulkareem Hussain Dagher. "High Output Power Holmium-Doped Fiber Laser at 2100 nm." Mustansiriyah Journal of Pure and Applied Sciences 2, no. 3 (2024): 18–23. http://dx.doi.org/10.47831/mjpas.v2i3.240.

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A theoretical model of three levels describing Holmium-doped fiber lasers pumped by Laser-diodes 1150nm is present. Based on the model, efficiency as well as output power depend on the length of active media, are investigate, using the MATLAB program (R 2019 a). The results shows that output power and efficiency of optical fibers are exponential inverse relationship with increment fiber length, for 1m output power have highest value 100.4W, while efficiency have 44.6% at 0.05m.
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36

Franczyk, Marcin, Dariusz Pysz, and Ryszard Buczyński. "100 W - pump limited Yb3+ doped silica fiber laser." Photonics Letters of Poland 16, no. 2 (2024): 22–24. https://doi.org/10.4302/plp.v16i2.1248.

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We present the laser system based on developed in-house Yb3+ doped silica fiber with a large core with a diameter of 21 µm, dedicated to high power applications. In the laser system, we achieved a maximum output power of 107 W limited by the available pump diode, in 25 m long fiber with high slope efficiency of 65 %. The laser generated at wavelength of 1080 nm and with beam quality of Mx2 = 1.43 and My2 = 1.44. Full Text: PDF References I. Divliansky, High power fiber lasers (Institution of Engineering and Technology, 2019). DirectLink B. Yang, P. Wang, H. Zhang, X. Xi, C. Shi, X. Wang, and X
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37

Fathi, Hossein, Mikko Närhi, and Regina Gumenyuk. "Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers." Photonics 8, no. 12 (2021): 566. http://dx.doi.org/10.3390/photonics8120566.

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Fiber laser technology has been demonstrated as a versatile and reliable approach to laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single-fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high-pow
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38

Liang, Xiaolin, Kai Jiao, Xiange Wang, et al. "Progresses of Mid-Infrared Glass Fiber for Laser Power Delivery." Photonics 11, no. 1 (2023): 19. http://dx.doi.org/10.3390/photonics11010019.

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High-power laser delivery in infrared optical fiber has received much attention due to the urgent needs in the fields of national defense security, biomedicine, advanced manufacturing, and so on. In recent decades, there has been extensive research aimed at enhancing the capabilities of infrared laser power delivery through the purification of infrared glass or the optimization of fiber structures. This article provides an overview of common passive mid-infrared (MIR) optical fibers with numerous glasses and fiber structures, as well as their characteristics in laser power delivery. This revie
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39

Pajewski, Łukasz, Łukasz Sójka, Samir Lamrini, Trevor Benson, Angela Seddon, and Sławomir Sujecki. "Experimental investigation of mid-infrared Er:ZBLAN fiber laser." Photonics Letters of Poland 12, no. 3 (2020): 73. http://dx.doi.org/10.4302/plp.v12i3.989.

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In this contribution the diode pumped high-power Er:ZBLAN laser operating at around 2.8 µm is reported. The laser produces 2 W output power with the slope efficiency of 24 % measured with respect to the incident pump power. Full Text: PDF ReferencesS. D. Jackson, "Towards high-power mid-infrared emission from a fibre laser", Nature Photonics 6, 423 (2012). CrossRef V. Portosi, D. Laneve, C. M. Falconi, and F. Prudenzano, "Advances on Photonic Crystal Fiber Sensors and Applications", Sensors 19, (2019). CrossRef M. C. Falconi, D. Laneve, and F. Prudenzano, "Advances in Mid-IR Fiber Lasers: Tell
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40

Lin Huaiqin, 林怀钦, 郭春雨 Guo Chunyu, 阮双琛 Ruan Shuangchen, 欧阳德钦 Ouyang Deqin, 杨锦辉 Yang Jinhui, and 伍一鸣 Wu Yiming. "High-Power All-Fiber Yb-Doped Picosecond Fiber Laser." Chinese Journal of Lasers 40, no. 7 (2013): 0702013. http://dx.doi.org/10.3788/cjl201340.0702013.

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41

Muraviev, Sergei, Vitaly Dorofeev, Sergei Motorin, Maxim Koptev та Arkady Kim. "A 30 mW Laser Oscillator at 2.72 μm and 2.8 μm Wavelengths Based on Er3+-Doped Tungsten–Tellurite Fibers". Photonics 11, № 12 (2024): 1159. https://doi.org/10.3390/photonics11121159.

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The purpose of this paper was to develop fiber lasers in the 2.7–2.8 μm range based on the tungsten–tellurite glass fiber that is technically robust compared to the other fibers currently used in laser engineering. Using an advanced technology for producing ultra-dry tellurite glasses, we manufactured Er3+-doped tungsten–tellurite glass preforms with extremely low absorption and obtained active single-mode tungsten–tellurite fibers. Based on a 70 cm long fiber, we developed a laser oscillator pumped by a low-cost, high-efficiency diode laser at 976 nm. At the highest used pump power, the laser
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42

Alkeskjold, Thomas T., Marko Laurila, Johannes Weirich, et al. "Photonic crystal fiber amplifiers for high power ultrafast fiber lasers." Nanophotonics 2, no. 5-6 (2013): 369–81. http://dx.doi.org/10.1515/nanoph-2013-0050.

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AbstractIn recent years, ultrafast laser systems using large-mode-area fiber amplifiers delivering several hundreds of watts of average power has attracted significant academic and industrial interest. These amplifiers can generate hundreds of kilowatts to megawatts of peak power using direct amplification and multi-gigawatts of peak power using pulse stretching techniques. These amplifiers are enabled by advancements in Photonic Crystal Fiber (PCF) design and manufacturing technology. In this paper, we will give a short overview of state-of-the-art PCF amplifiers and describe the performance
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43

Shi Zhuo, Chang Hong-Xiang, Wang Dong-Liang, et al. "High power, high energy four-channel fiber coherent beam combining system." Acta Physica Sinica 74, no. 1 (2025): 0. http://dx.doi.org/10.7498/aps.74.20241476.

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Objective: Ultrafast fiber laser sources with mJ-level pulse energy and kilo-watt average power are of particular importance for various science fields such as attosecond lasers. Nowadays, several attosecond laser large scale facilities are under construction, including ELI-ALPS in Europe, SECUF in China, NeXUS in America and ALFA in Japan, to name a few. High performance femtosecond driven lasers are crucial for attosecond lasers and various ultrafast laser facilities. Fiber lasers have large surface-to-volume ratio for efficient cooling, and are suitable for high average power amplification.
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Wu, Jiadong, Chunxiang Zhang, Jun Liu, et al. "Over 19 W Single-Mode 1545 nm Er,Yb Codoped All-Fiber Laser." Advances in Condensed Matter Physics 2017 (2017): 1–5. http://dx.doi.org/10.1155/2017/7408565.

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We report a high-power cladding-pumped Er,Yb codoped all-fiber laser with truly single transverse mode output. The fiber laser is designed to operate at 1545 nm by the use of a pair of fiber Bragg gratings (FBGs) to lock and narrow the output spectrum, which can be very useful in generating the eye-safe ~1650 nm laser emission through the Stimulated Raman Scattering (SRS) in silica fibers that is of interest in many applications. Two pieces of standard single-mode fibers are inserted into the laser cavity and output port to guarantee the truly single-mode output as well as good compatibility w
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Songtao, Songtao, Ziwei Wang Ziwei Wang, Zhaokun Wang Zhaokun Wang, Jing He Jing He, Jun Zhou Jun Zhou, and Qihong Lou Qihong Lou. "All-fiber, high-average-power nanosecond laser based on core-diameter adjustment." Chinese Optics Letters 11, no. 9 (2013): 091402–91404. http://dx.doi.org/10.3788/col201311.091402.

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46

Wen Dai, Wen Dai, Youjian Song Youjian Song, Bo Xu Bo Xu, et al. "High-power sub-picosecond all-fiber laser source at 1.56 lm-corrigendum." Chinese Optics Letters 12, no. 12 (2014): 123502. http://dx.doi.org/10.3788/col201412.123502.

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Hanwei Zhang, Hanwei Zhang, Hu Xiao Hu Xiao, Pu Zhou Pu Zhou, Xiaolin Wang Xiaolin Wang та Xiaojun Xu Xiaojun Xu. "High-power random distributed feedback Raman fiber laser operating at 1.2-μm". Chinese Optics Letters 12, s2 (2014): S21410–321412. http://dx.doi.org/10.3788/col201412.s21410.

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Khotiaintsev, S., and A. N. Castro-Martinez. "Thermal treatment of silica optical fibers with CO2-laser radiation." Electronics and Communications 16, no. 4 (2011): 172–76. http://dx.doi.org/10.20535/2312-1807.2011.16.4.246655.

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We investigate theoretically and experimentally the effect of high-power CO2–laser radiation on silica optical fibers. We show that it takes several tens of milliseconds to heat the standard single–mode silica optical fiber to the fusing temperature of silica with the focused radiation of the CO2 laser of an output power of about 5 W. A point by point exposure of the optical fiber to the focused radiation of the CO2 laser under simultaneous axial tension results in a periodic necking of the optical fiber. Such an alteration of fiber parameters constitutes the Long Period Fiber Grating
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49

Singh, Nidhi, Carlos-Felipe Roa, Emmanuel Chérin, Lothar Lilge, and Christine E. M. Demore. "Side-Illuminating Optical Fiber for High-Power-Density-Mediated Intraluminal Photoacoustic Imaging." Applied Sciences 15, no. 7 (2025): 3639. https://doi.org/10.3390/app15073639.

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Intraluminal photoacoustic (PA) imaging has the potential for providing physiological and functional information in wide-ranging clinical applications. Along with endoluminal ultrasound transducers, these applications require compact light delivery devices which can deliver high-energy ns-pulsed laser to the target region. In this work, we describe the design, method of fabrication and characterization of a new compact, side-fire optical fiber that can deliver high-energy laser pulses for PA imaging. Side-fire illuminators were fabricated using UV laser ablation to create windows on the side o
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Tao, Mengmeng, Hongwei Chen, Guobin Feng, et al. "Comparisons between high power fiber systems in the presence of radiation induced photodarkening." Laser Physics 32, no. 5 (2022): 055101. http://dx.doi.org/10.1088/1555-6611/ac5dc4.

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Abstract Performance of high power fiber lasers and amplifiers with different pump sources are evaluated in the presence of radiation induced photodarkening in post-irradiated active fibers. Evolutions of output power and thermal mode instability threshold under different radiation doses are examined and analyzed. Severe degradation in both output power and thermal mode instability threshold is recorded for high power fiber systems with their active fibers exposed to radiations. Comparisons show that, amplifiers present a relatively better performance than lasers in adverse environments. Besid
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