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Journal articles on the topic 'Coherent optical pulses'

Author: Grafiati

Published: 11 March 2023

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1

SHARABY, Y. A., A. JOSHI, and S. S. HASSAN. "COHERENT POPULATION TRANSFER IN V-TYPE ATOMIC SYSTEM." Journal of Nonlinear Optical Physics & Materials 22, no. 04 (2013): 1350044. http://dx.doi.org/10.1142/s0218863513500446.

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In this paper, we investigate numerically the modeled density matrix equations for the interaction of a three-level atomic system in V-configuration with a train of chirped optical n-pulses (up to n = 10) within and without the rotating wave approximation. For adopted data of Rb 87, maximal population transfer to either of the upper levels is achieved with n > 1 pulse via variation of chirp parameter/frequency mismatch of the closely lying upper levels. Optimal steady population transfer and maximum atomic coherence of the upper levels are predicted for non-zero chirp parameter and train of

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2

Xue, Yinghong, Yueping Niu, and Shangqing Gong. "External Modulation Optical Coherent Domain Reflectometry with Long Measurement Range." Sensors 21, no. 16 (2021): 5510. http://dx.doi.org/10.3390/s21165510.

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Optical coherent domain reflectometry (OCDR) can achieve a high spatial resolution that is independent of the bandwidth of the receiver, but the measurement range is usually very limited. Here we propose an external modulation OCDR system, in which a pair of linear frequency-modulated pulses generated by one modulator are employed as the probe pulse and the reference, respectively. The spatial resolution is determined by the frequency modulation range of the pulse, and the measurement speed is boosted by orders because the proposed technology can simultaneously diagnose a section of fiber with

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3

Gabitov, Ildar R., Bridget Kennedy, and Andrei I. Maimistov. "Coherent Amplification of Optical Pulses in Metamaterials." IEEE Journal of Selected Topics in Quantum Electronics 16, no. 2 (2010): 401–9. http://dx.doi.org/10.1109/jstqe.2009.2032667.

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4

Semenov, A. L., and D. N. Bezbat’ko. "Coherent phonons excited by two optical pulses." Physics of the Solid State 58, no. 2 (2016): 333–35. http://dx.doi.org/10.1134/s106378341602027x.

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5

Jeong, Heejeong, та Ulf Österberg. "Coherent transients: optical precursors and 0π pulses". Journal of the Optical Society of America B 25, № 7 (2008): B1. http://dx.doi.org/10.1364/josab.25.0000b1.

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6

Sinyavskii, A. V. "Coherent-difference detection of optical radiation pulses." Quantum Electronics 25, no. 6 (1995): 605–6. http://dx.doi.org/10.1070/qe1995v025n06abeh000424.

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7

Aquila, A., M. Drescher, T. Laarmann, M. Barthelmeß, H. N. Chapman, and S. Bajt. "Moving the Frontier of Quantum Control into the Soft X-Ray Spectrum." International Journal of Optics 2011 (2011): 1–4. http://dx.doi.org/10.1155/2011/417075.

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The femtosecond nature of X-ray free electron laser (FEL) pulses opens up exciting research possibilities in time-resolved studies including femtosecond photoemission and diffraction. The recent developments of seeding X-ray FELs extend their capabilities by creating stable, temporally coherent, and repeatable pulses. This in turn opens the possibility of spectral engineering soft X-ray pulses to use as a probe for the control of quantum dynamics. We propose a method for extending coherent control pulse-shaping techniques to the soft X-ray spectral range by using a reflective geometry 4f pulse

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8

Zaitsu, Shin-ichi, Takumi Tanabe, Kota Oshima, and Hiroyuki Hirata. "Theoretical Analysis of a Molecular Optical Modulator for a Continuous-Wave Laser Based on a Hollow-Core Photonic Crystal Fiber." Applied Sciences 8, no. 10 (2018): 1895. http://dx.doi.org/10.3390/app8101895.

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A THz optical modulator for a continuous-wave laser using a hollow-core photonic crystal fiber (HC-PCF) was proposed and theoretically analyzed. Lightwaves traveling through the HC-PCF is modulated by interactions with coherently driven Raman-active molecules in the core. The coherent molecular motion is excited by a pulse train having an interval between successive pulses shorter than the molecular dephasing time. In principle, a rotational transition of molecular hydrogen (S 0 (1)) at a pressure of 1 atm has a long enough dephasing time to maintain molecular coherence during a 1 GHz commerci

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Nakano, Yuta, Anton D. Shutov, Totaro Imasaka, and Alexei V. Sokolov. "Generation of Ultrafast Optical Pulses via Molecular Modulation in Ambient Air." Applied Sciences 9, no. 12 (2019): 2509. http://dx.doi.org/10.3390/app9122509.

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We investigated the possibility of making ever-shorter optical pulses by using the nonlinearity of ambient air. We produced a broad spectrum consisting of mutually coherent optical sidebands via collinear Raman generation driven by two picosecond laser pulses that are Raman-resonant with molecular vibrations of nitrogen. We demonstrated the ability to adjust the sideband phases via dispersion control which we accomplished by changing the optical path length of the generated multi-color beam through a pair of tilted glass plates. The resultant measured phases suggest the generation of a 3-fs op

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10

Sato, Takahiro, James M. Glownia, Matthiew R. Ware, Matthieu Chollet, Silke Nelson, and Diling Zhu. "A simple instrument to find spatiotemporal overlap of optical/X-ray light at free-electron lasers." Journal of Synchrotron Radiation 26, no. 3 (2019): 647–52. http://dx.doi.org/10.1107/s1600577519002248.

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A compact and robust diagnostic to determine spatial and temporal overlap between X-ray free-electron laser and optical laser pulses was developed and evaluated using monochromatic X-rays from the Linac Coherent Light Source. It was used to determine temporal overlap with a resolution of ∼10 fs, despite the large pulse energy fluctuations of the monochromatic X-ray pulses, and covers a wide optical wavelength range from ultraviolet to near-infrared with a single configuration.

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11

Jiang, Shicheng, and Konstantin Dorfman. "Detecting electronic coherences by time-domain high-harmonic spectroscopy." Proceedings of the National Academy of Sciences 117, no. 18 (2020): 9776–81. http://dx.doi.org/10.1073/pnas.1919360117.

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Ultrafast spectroscopy is capable of monitoring electronic and vibrational states. For electronic states a few eV apart, an X-ray laser source is required. We propose an alternative method based on the time-domain high-order harmonic spectroscopy where a coherent superposition of the electronic states is first prepared by the strong optical laser pulse. The coherent dynamics can then be probed by the higher-order harmonics generated by the delayed probe pulse. The high nonlinearity typically modeled by the three-step mechanism introduced by Lewenstein and Corkum can serve as a recipe for gener

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12

Weiner, A. M., J. P. Heritage, and R. N. Thurston. "Synthesis of phase-coherent, picosecond optical square pulses." Optics Letters 11, no. 3 (1986): 153. http://dx.doi.org/10.1364/ol.11.000153.

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13

Merkel, K. D., and W. R. Babbitt. "Coherent transient optical signal processing without brief pulses." Applied Optics 35, no. 2 (1996): 278. http://dx.doi.org/10.1364/ao.35.000278.

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14

Boscolo, Sonia, and Christophe Finot. "Nonlinear Pulse Shaping in Fibres for Pulse Generation and Optical Processing." International Journal of Optics 2012 (2012): 1–14. http://dx.doi.org/10.1155/2012/159057.

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The development of new all-optical technologies for data processing and signal manipulation is a field of growing importance with a strong potential for numerous applications in diverse areas of modern science. Nonlinear phenomena occurring in optical fibres have many attractive features and great, but not yet fully explored, potential in signal processing. Here, we review recent progress on the use of fibre nonlinearities for the generation and shaping of optical pulses and on the applications of advanced pulse shapes in all-optical signal processing. Amongst other topics, we will discuss ult

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15

Pääkkönen, Pertti, Jari Turunen, Pasi Vahimaa, Ari T. Friberg, and Frank Wyrowski. "Partially coherent Gaussian pulses." Optics Communications 204, no. 1-6 (2002): 53–58. http://dx.doi.org/10.1016/s0030-4018(02)01240-3.

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16

Полтавцев, С. В., И. А. Югова, И. А. Акимов, Д. Р. Яковлев та M. Bayer. "Фотонное эхо на локализованных экситонах в полупроводниковых наноструктурах". Физика твердого тела 60, № 8 (2018): 1587. http://dx.doi.org/10.21883/ftt.2018.08.46254.17gr.

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AbstractAn overview on photon echo spectroscopy under resonant excitation of the exciton complexes in semiconductor nanostructures is presented. The use of four-wave-mixing technique with the pulsed excitation and heterodyne detection allowed us to measure the coherent response of the system with the picosecond time resolution. It is shown that, for resonant selective pulsed excitation of the localized exciton complexes, the coherent signal is represented by the photon echoes due to the inhomogeneous broadening of the optical transitions. In case of resonant excitation of the trions or donor-b

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17

Liu, Yuchen, Jian Yin, Xutang Tao, Arkady Yartsev, and Pierre-Adrien Mante. "Effect of probe pulse duration in picosecond ultrasonics." Applied Physics Letters 120, no. 20 (2022): 202201. http://dx.doi.org/10.1063/5.0093321.

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Picosecond ultrasonics is a powerful tool for nanoscale metrology, giving access to dimensions and mechanical, thermal, and optical properties of nanomaterials. By monitoring the temporal evolution of the interaction of light with coherent acoustic phonons, also known as Brillouin oscillations, phonon lifetime and optical absorption can be measured. However, the extraction of these quantities can be inaccurate due to the common assumption of the infinite coherence length of probe pulses. Here, we demonstrate the effect of probe pulse duration on picosecond ultrasonic measurements numerically a

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18

Bai, Y. S., W. R. Babbitt, and T. W. Mossberg. "Coherent transient optical pulse-shape storage/recall using frequency-swept excitation pulses." Optics Letters 11, no. 11 (1986): 724. http://dx.doi.org/10.1364/ol.11.000724.

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19

Finkelstein, V., and P. R. Berman. "Optical coherent transients induced by time-delayed fluctuating pulses: Three-pulse transients." Physical Review A 41, no. 11 (1990): 6193–224. http://dx.doi.org/10.1103/physreva.41.6193.

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20

Panajotovic, Aleksandra, Daniela Milovic, Anjan Biswas, and Essaid Zerrad. "Influence of Even-Order Dispersion on Super-Sech Soliton Transmission Quality under Coherent Crosstalk." Research Letters in Optics 2008 (2008): 1–5. http://dx.doi.org/10.1155/2008/613986.

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The transmission speed of optical network strongly depends on the impact of higher order dispersion. In presence of coherent crosstalk, which cannot be otherwise controlled by optical filtering, the impact of higher order dispersions becomes more pronounced. In this paper, the general expressions, that describe pulse deformation due to second- and fourth-order dispersions in a single-mode fiber, are given. The responses for such even-order dispersions, in presence of coherent crosstalk, are characterized by waveforms with long trailing edges. The transmission quality of optical pulses, due to

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21

Hasegawa, Takayuki. "Characteristics of Coherent Optical Phonons in a Hexagonal YMnO3 Thin Film." Applied Sciences 9, no. 4 (2019): 704. http://dx.doi.org/10.3390/app9040704.

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This paper reviews our recent study on a coherent optical phonon in a hexagonal YMnO3 thin film together with related optical studies in hexagonal RMnO3 (R = Y, Lu, Ho) compounds. Coherent phonons have been observed in RMnO3 compounds by pump-probe spectroscopy with subpicosecond laser pulses, whereas the observation of coherent optical phonons was reported only in LuMnO3. Recently, we succeeded in the observation of the coherent optical phonon in a YMnO3 thin film. The generation process of the coherent optical phonon is assigned to a displacive mechanism, which is identical to that in LuMnO3

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22

XU, SHUWU, YUNXIA HUANG, and XIANMING JI. "SELECTIVE EXCITATION OF COHERENT ANTI-STOKES RAMAN SCATTERING VIA PHASE STEP MODULATION." Journal of Nonlinear Optical Physics & Materials 22, no. 01 (2013): 1350002. http://dx.doi.org/10.1142/s0218863513500021.

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It is known that femtosecond coherent anti-Stokes Raman scattering (CARS) method suffers from the drawback of poor selectivity between neighboring Raman energy levels due to the large bandwidth of the pulses. Quantum coherent control based on the ultrashort pulse shaping technique is a promising solution. In this paper, we propose a simple approach to realize the selective excitation of CARS spectra by shaping both the probe and pump pulses with the π phase step. By phase step modulation of the probe pulse, we show that the CARS signals between neighboring Raman energy levels can be greatly na

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23

Flöry, Tobias, Edgar Kaksis, Ignas Astrauskas, et al. "Direct time-domain shaping of high-energy femtosecond pulses at THz burst frequencies." EPJ Web of Conferences 205 (2019): 01017. http://dx.doi.org/10.1051/epjconf/201920501017.

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We generate fully controllable fs multimillijoule pulse bursts with the energy handling, throughput efficiency and frequency resolution substantially exceeding that achievable in spatial-light-modulator and interferometric techniques. The demonstrated proof-of-concept experiments include coherent control of nitrogen-ion emission via multiple-pulse excitation and generation of tunable narrowband THz pulses via optical rectification.

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24

Apretna, T., N. Nilforoushan, J. Tignon, et al. "Coherent THz wave emission from HgTe quantum dots." Applied Physics Letters 121, no. 25 (2022): 251101. http://dx.doi.org/10.1063/5.0134396.

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Mercury telluride (HgTe) nanocrystals (NCs) are very promising for THz technology as they exhibit broad THz absorption resonances and a carrier lifetime of a few picoseconds as well as being easily fabricated using solution synthesis. In this work, we show their light emission properties in the THz spectral range, up until now unexplored, and show how THz pulse generation can be used for microscopic insights into these NCs. In particular, we report on coherent THz emission from large HgTe NCs excited by linearly polarized optical pulses via second-order nonlinear effects. The peak emission fre

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25

Halavanau, Aliaksei, Andrei Benediktovitch, Alberto A. Lutman, et al. "Population inversion X-ray laser oscillator." Proceedings of the National Academy of Sciences 117, no. 27 (2020): 15511–16. http://dx.doi.org/10.1073/pnas.2005360117.

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Oscillators are at the heart of optical lasers, providing stable, transform-limited pulses. Until now, laser oscillators have been available only in the infrared to visible and near-ultraviolet (UV) spectral region. In this paper, we present a study of an oscillator operating in the 5- to 12-keV photon-energy range. We show that, using theKα1line of transition metal compounds as the gain medium, an X-ray free-electron laser as a periodic pump, and a Bragg crystal optical cavity, it is possible to build X-ray oscillators producing intense, fully coherent, transform-limited pulses. As an example

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26

Talukder, Ria, Atri Halder, Matias Koivurova, et al. "Generation of pulse trains with nonconventional temporal correlation properties." Journal of Optics 24, no. 5 (2022): 055502. http://dx.doi.org/10.1088/2040-8986/ac5c69.

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Abstract We apply time dependent spectral phase modulation to generate pulse trains that are spectrally and temporally partially coherent in an ensemble averaged sense. We consider, in particular, quadratic spectral phase modulation of Gaussian pulses, and demonstrate two particular types of nonuniformly correlated pulse trains. The controlled partial temporal coherence of the nonstationary fields is generated using a pulse compressor and experimentally verified with frequency resolved optical gating (FROG). We show that the correlation characteristics of such pulse trains can be retrieved dir

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27

Christov, I. P. "Propagation of Partially Coherent Light Pulses." Optica Acta: International Journal of Optics 33, no. 1 (1986): 63–72. http://dx.doi.org/10.1080/713821858.

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28

Heeg, Kilian P., Andreas Kaldun, Cornelius Strohm, et al. "Coherent X-ray−optical control of nuclear excitons." Nature 590, no. 7846 (2021): 401–4. http://dx.doi.org/10.1038/s41586-021-03276-x.

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AbstractCoherent control of quantum dynamics is key to a multitude of fundamental studies and applications1. In the visible or longer-wavelength domains, near-resonant light fields have become the primary tool with which to control electron dynamics2. Recently, coherent control in the extreme-ultraviolet range was demonstrated3, with a few-attosecond temporal resolution of the phase control. At hard-X-ray energies (above 5–10 kiloelectronvolts), Mössbauer nuclei feature narrow nuclear resonances due to their recoilless absorption and emission of light, and spectroscopy of these resonances is w

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29

Châtelain, Benoît, Charles Laperle, Kim Roberts, et al. "A family of Nyquist pulses for coherent optical communications." Optics Express 20, no. 8 (2012): 8397. http://dx.doi.org/10.1364/oe.20.008397.

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30

Kozlov, Victor V., and Stefan Wabnitz. "Quasi-parabolic pulses in a coherent nonlinear optical amplifier." Optics Letters 35, no. 12 (2010): 2058. http://dx.doi.org/10.1364/ol.35.002058.

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31

Pryde, G. J., M. J. Sellars, and N. B. Manson. "Solid State Coherent Transient Measurements Using Hard Optical Pulses." Physical Review Letters 84, no. 6 (2000): 1152–55. http://dx.doi.org/10.1103/physrevlett.84.1152.

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32

Geddes III, Joseph B., Daniel L. Marks, and Stephen A. Boppart. "Design of Matched Optical Pulses for Coherent Raman Imaging." Optics and Photonics News 20, no. 12 (2009): 31. http://dx.doi.org/10.1364/opn.20.12.000031.

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33

Cheung, K. P., and D. H. Auston. "Excitation of Coherent Phonon Polaritons with Femtosecond Optical Pulses." Physical Review Letters 55, no. 20 (1985): 2152–55. http://dx.doi.org/10.1103/physrevlett.55.2152.

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34

Minkovich, V. P., A. N. Starodumov, V. I. Borisov, V. I. Lebedev, and S. N. Perepechko. "Temporal interference of coherent laser pulses in optical fibers." Optics Communications 192, no. 3-6 (2001): 231–35. http://dx.doi.org/10.1016/s0030-4018(01)01215-9.

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35

Mishina, Tomobumi, and Yasuaki Masumoto. "Nonlinear coherent propagation of femtosecond optical pulses in semiconductors." Progress in Crystal Growth and Characterization of Materials 33, no. 1-3 (1996): 113–16. http://dx.doi.org/10.1016/0960-8974(96)83624-2.

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36

Liao, C., H. Y. Zhang, and Y. Z. Gao. "New method for generation of coherent ultrashort optical pulses." Electronics Letters 27, no. 7 (1991): 550. http://dx.doi.org/10.1049/el:19910347.

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37

TALANINA, I. B. "EXCITONIC SELF-INDUCED TRANSPARENCY IN SEMICONDUCTORS." Journal of Nonlinear Optical Physics & Materials 05, no. 01 (1996): 51–57. http://dx.doi.org/10.1142/s0218863596000064.

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The form invariant coherent pulse propagation in semiconductors excited at 1s-exciton resonance is studied analytically using the reduced semiconductor Maxwell-Bloch equations. The sech-shaped pulse solution for excitonic self-induced transparency (SIT) is presented, showing significant difference in comparison with the well known SIT solution for non-interacting two-level systems. In contrast to 2π pulses in atomic systems, the phenomenon of SIT of interacting excitons in semiconductors occurs for the pulses of area 1.07π. Possible applications of the SIT solitons in semiconductor all-optical

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38

Withington, Stafford, George Saklatvala, and Michael Hobson. "Scattering coherent and partially coherent space-time pulses through few-mode optical systems." Journal of the Optical Society of America A 23, no. 11 (2006): 2775. http://dx.doi.org/10.1364/josaa.23.002775.

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39

Kolbasova, Daria, and Robin Santra. "Analytical Theory of Attosecond Transient Absorption Spectroscopy of Perturbatively Dressed Systems." Applied Sciences 9, no. 7 (2019): 1350. http://dx.doi.org/10.3390/app9071350.

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A theoretical description of attosecond transient absorption spectroscopy for temporally and spatially overlapping XUV and optical pulses is developed, explaining the signals one can obtain in such an experiment. To this end, we employ a two-stage approach based on perturbation theory, which allows us to give an analytical expression for the transient absorption signal. We focus on the situation in which the attosecond XUV pulse is used to create a coherent superposition of electronic states. As we explain, the resulting dynamics can be detected in the spectrum of the transmitted XUV pulse by

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40

GUPTA, J. A., D. D. AWSCHALOM, R. KNOBEL, and N. SAMARTH. "ULTRAFAST MANIPULATION OF ELECTRON SPIN COHERENCE IN QUANTUM WELLS." International Journal of Modern Physics B 16, no. 20n22 (2002): 2930–35. http://dx.doi.org/10.1142/s0217979202013237.

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A recently developed technique is reviewed with the potential for all-optical coherent control over electron spins in semiconductors. In these experiments, ultrafast laser pulses "tip" electron spins by generating effective magnetic fields via the optical Stark effect. Measurements of Stark shifts have provided estimates of the net tipping angle as a function of tipping pulse energy, intensity, and polarization. Background contributions to the measured tipping angle arise from the undesirable excitation of additional carriers by the tipping pulse.

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41

Feng, Liqiang, and Hang Liu. "Unipolar pulse assisted generation of the coherent XUV pulses." Optics Communications 348 (August 2015): 1–6. http://dx.doi.org/10.1016/j.optcom.2015.03.026.

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42

Tsyplenkov V.V. and Shastin V.N. "Photon echo in germanium with shallow donors." Semiconductors 56, no. 8 (2022): 513. http://dx.doi.org/10.21883/sc.2022.08.54454.22.

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A theoretical study was made of the conditions for observing the photon echo effect in a germanium crystal doped with shallow donors. A numerical calculation of the medium polarization excited by a sequence of two optical pulses at a frequency close to the impurity transition frequency has been made. The effect of excitation pulse parameters, such as the pulse duration, the inhomogeneous broadening of impurity transitions and the relaxation rate of population and coherence in the system on the echo is considered. The key aspect in the experimental implementation of the effect is the control of

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43

Wang, Xingxing, Adam Patel, and Alexey Shashurin. "Initial transient stage of pin-to-pin nanosecond repetitively pulsed discharges in air." Journal of Applied Physics 132, no. 1 (2022): 013301. http://dx.doi.org/10.1063/5.0093794.

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In this work, evolution of parameters of nanosecond repetitively pulsed (NRP) discharges in pin-to-pin configuration in air was studied during the transient stage of initial 20 discharge pulses. Gas and plasma parameters in the discharge gap were measured using coherent microwave scattering, optical emission spectroscopy, and laser Rayleigh scattering for NRP discharges at repetition frequencies of 1, 10, and 100 kHz. Memory effects (when perturbations induced by the previous discharge pulse would not decay fully until the subsequent pulse) were detected for the repetition frequencies of 10 an

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44

Garg, M., and K. Kern. "Attosecond coherent manipulation of electrons in tunneling microscopy." Science 367, no. 6476 (2019): 411–15. http://dx.doi.org/10.1126/science.aaz1098.

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Nanoelectronic devices operating in the quantum regime require coherent manipulation and control over electrons at atomic length and time scales. We demonstrate coherent control over electrons in a tunnel junction of a scanning tunneling microscope by means of precise tuning of the carrier-envelope phase of two-cycle long (<6-femtosecond) optical pulses. We explore photon and field-driven tunneling, two different regimes of interaction of optical pulses with the tunnel junction, and demonstrate a transition from one regime to the other. Our results show that it is possible to induce, track,

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45

CROOKER, S. A., and A. J. TAYLOR. "ULTRAFAST COHERENT TERAHERTZ SPECTROSCOPY IN HIGH MAGNETIC FIELDS." International Journal of Modern Physics B 16, no. 20n22 (2002): 3385–88. http://dx.doi.org/10.1142/s0217979202014498.

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With an aim towards measuring the high-frequency complex conductivity of correlated electron materials in the regime of low temperatures and high magnetic fields, we introduce a method for performing time-domain terahertz spectroscopy directly in the cryogenic bore of existing dc and pulsed-field magnets. Miniature, fiber-coupled THz emitters and receivers are constructed and are demonstrated to work down to 5 K and up to 6 Tesla, for eventual use in higher-field magnets. Maintaining the sub-micron alignment between fiber and antenna during thermal cycling, and obtaining ultrafast (<200fs)

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46

Wei, Yuxuan, Jiaming Le, Li Huang, and Chuanshan Tian. "Efficient generation of intense broadband terahertz pulses from quartz." Applied Physics Letters 122, no. 8 (2023): 081105. http://dx.doi.org/10.1063/5.0134139.

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Intense terahertz (THz) pulses facilitate the observation of various nonlinear optical effects and the manipulation of material properties. In this work, we report a convenient approach to produce strong broadband THz pulses with a center frequency tunable between 2 and 4 THz. A coherent THz light source with a pulse energy of 1.2 mJ can be generated from low-cost crystalline quartz using a tilted-pulse-front scheme. Thanks to the wide transparent spectral window and high damage threshold, our theoretical analysis and experiment show that the THz conversion efficiency in quartz reaches 0.05%,

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47

BAEV, ALEXANDER, PONTUS WELINDER, ROBERT ERLANDSSON, JOHAN HENRIKSSON, PATRICK NORMAN, and HANS ÅGREN. "A QUANTUM MECHANICAL — ELECTRODYNAMICAL APPROACH TO NONLINEAR PROPERTIES: APPLICATION TO OPTICAL POWER LIMITING WITH PLATINUM-ORGANIC COMPOUNDS." Journal of Nonlinear Optical Physics & Materials 16, no. 02 (2007): 157–69. http://dx.doi.org/10.1142/s0218863507003652.

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Light propagation in a medium is sensitively dependent on the shape and intensity of the optical pulse as well as on the electronic and vibrational structure of the basic molecular units. We review in this paper the results of systematic studies of this problem for isotropic media. Our theoretical approach—the quantum mechanical–electrodynamical (QMED) approach—is based on a quantum mechanical account of the many-level electron-nuclear medium coupled to a numerical solution of the density matrix and Maxwell's equations. This allows us to accommodate a variety of nonlinear effects which accompl

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48

Ceraso, Arianna, Sen Mou, Andrea Rubano, and Domenico Paparo. "Coherent THz Hyper-Raman: Spectroscopy and Application in THz Detection." Materials 12, no. 23 (2019): 3870. http://dx.doi.org/10.3390/ma12233870.

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Recently we have demonstrated a new nonlinear optical effect in the THz interval of frequencies. The latter is based on the use of femtosecond optical pulses and intense, sub-ps, broadband terahertz (THz) pulses to generate a THz-optical four- and five-wave mixing in the investigated material. The spectrum of the generated signal is resolved in time and wavelength and displays two pronounced frequency sidebands, Stokes and anti-Stokes, close to the optical second harmonic central frequency 2 ω L , where ω L is the optical central frequency of the fundamental beam, thus resembling the spectrum

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Karni, O., A. K. Mishra, G. Eisenstein, V. Ivanov, and J. P. Reithmaier. "Coherent control in room-temperature quantum dot semiconductor optical amplifiers using shaped pulses." Optica 3, no. 6 (2016): 570. http://dx.doi.org/10.1364/optica.3.000570.

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Itoh, Kohichi, Yasunori Toda, Ryuji Morita, and Mikio Yamashita. "Coherent Optical Control of Molecular Motion Using Polarized Sequential Pulses." Japanese Journal of Applied Physics 43, no. 9A (2004): 6448–51. http://dx.doi.org/10.1143/jjap.43.6448.

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