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Dissertations / Theses on the topic 'Semiconductor lasers Semiconductor lasers'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Erwin, Grant. "Compact semiconductor lasers." Thesis, University of Glasgow, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479040.

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2

Hempler, Nils. "Semiconductor disk laser pumped Cr²⁺:chalcogenide lasers." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=15339.

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3

Friart, Gaetan. "Semiconductor laser dynamics: two polarization feedback, quantum cascade lasers, and ring lasers." Doctoral thesis, Universite Libre de Bruxelles, 2017. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/248835.

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Semiconductor lasers (Sls) are very sensitive to external perturbations which may destabilize their steady output. This is particularly striking when the SL is subject to optical feedback, i.e. when part of the light coming out of the laser is reinjected in the cavity after reflection from a distant mirror. For some applications, this is a nuisance that we wish to avoid. But optical feedback may also drive the laser into dynamical regimes which are useful for new applications. In this thesis, we study different problems where an SL is subject to a delayed feedback or to an injected signal. The

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4

Park, Gyoungwon. "GaAs-based long-wavelength quantum dot lasers /." Digital version, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008414.

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5

Gray, George Robert. "Noise in semiconductor lasers." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/30500.

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6

Hinzer, Karin. "Semiconductor quantum dot lasers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0003/MQ36702.pdf.

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7

Elliott, Stella N. "High power semiconductor lasers." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54136/.

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Using red and near infra-red emitting quantum well and quantum dot based devices I have modelled the nearfield and farfield intensities and distribution in various waveguide structures. I compared the effect of various factors on the power density at catastrophic damage and found the greatest effect from the current pulse length and dot or well nature of the active region, for the first time in the AlGaInP material system. At short pulse length the quantum dot devices achieved a power density of 17 MW/cm<super>2</super> compared to 14 MW/cm<super>2</super> for quantum well lasers, and then pro

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8

Ziegler, Mathias. "Thermography of semiconductor lasers." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2009. http://dx.doi.org/10.18452/15944.

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Halbleiterlaser stellen mit über 70% Wirkungsgrad einzigartig effiziente Lichtquellen dar. Dennoch ist ihre zuverlässige Nutzung, insbesondere im Bereich hoher Leistungsdichten, von thermischen Limitierungen geprägt. Einen grundlegenden Beitrag zu deren physikalischen Verständnis leistet die Analyse der thermischen Eigenschaften und Degradationsprozesse solcher Bauelemente. In dieser Arbeit wird hierzu die Thermographie als innovative Analysemethode untersucht. Das Plancksche Strahlungsgesetz erlaubt die radiometrische Ermittlung der Temperatur. Die wichtige physikalische Kenngröße Emissivität

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9

Butkus, Mantas. "Quantum dot based semiconductor disk lasers." Thesis, University of Dundee, 2012. https://discovery.dundee.ac.uk/en/studentTheses/6b17df24-a721-4904-b49f-e35055990c16.

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Since its first successful demonstration more than five decades ago [1], laser technology experienced a huge leap forward in terms of technological innovations and the understanding of underlying physical principles of operation. There were many efforts made by those in both the scientific and commercial communities who envisioned the potential of lasers. As a result, the laser now is a powerful scientific tool in many disciplines. It is widely used not only in physics, but also in chemistry, biology, medicine, engineering, environmental sciences, arts and their interdisciplinary fields. Moreo

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10

Vasdekis, Andreas E. "Microresonators for organic semiconductor and fluidic lasers." Thesis, St Andrews, 2007. http://hdl.handle.net/10023/375.

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11

Parrotta, Daniele Carmine. "Raman lasers intracavity-pumped by semiconductor disk lasers." Thesis, University of Strathclyde, 2012. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=24895.

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Semiconductor disk lasers (SDLs) are efficient and commercially attractive devices as they can emit several Watts in continuous-wave (cw) operation, with good beam quality, low noise and great wavelength flexibility. SDL fundamental emission ranges from red to mid-infrared, while ultraviolet and other visible wavelength can be obtained via harmonic generation. This research shows that Raman conversion is an efficient way to extend the spectral coverage of well-established SDLs. The first experimental work consisted in the demonstration of a KGW Raman laser intracavity-pumped by a 1055 nm InGaA

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12

Modi, Nihar Triplett Gregory Edward. "Thermal management in GaAs/AlGaAs laser diode structures." Diss., Columbia, Mo. : University of Missouri--Columbia, 2007. http://hdl.handle.net/10355/6262.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb. 16, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Thesis supervisor: Dr. Gregory Triplett. Includes bibliographical references.

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13

Fritz, Mark A. Cassidy Daniel Thomas. "Die bonding of diode lasers /." *McMaster only, 2004.

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14

Lam, Samuel Kar Kin Cassidy Daniel Thomas. "Multi-component defect model for semiconductor lasers /." *McMaster only, 2003.

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15

Tsiminis, Georgios. "One- and two-photon pumped organic semiconductor lasers." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/927.

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This thesis describes a number of studies on organic semiconductors focused around using them as gain media for lasers. The photophysical properties of organic semiconductors are studied using a wide range of experimental techniques, allowing the evaluation of new materials and novel excitation schemes for use in organic semiconductor lasers. Polyfluorene is a well-established conjugated polymer laser gain medium and in this thesis its excellent lasing properties are combined with its two photon absorption properties to demonstrate a tunable two-photon pumped solid-state laser based on a comme

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16

Sun, Yunlong. "Laser processing optimization for semiconductor based devices /." Full text open access at:, 1997. http://content.ohsu.edu/u?/etd,3.

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17

Hayder, Alaa. "Multiwavelength Brillouin semiconductor fiber lasers." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116042.

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The past decade has seen an increased interest in multiwavelength optical sources. Various methods and technologies exist for developing multiwavelength lasers with varying features and characteristics. A particular category that has gained much interest, are multiwavelength fiber lasers that combine nonlinear gain from stimulated Brillouin scattering with linear gain from erbium doped fibers.<br>This thesis demonstrates experimentally a Brillouin semiconductor multiwavelength fiber laser that utilizes semiconductor optical amplifiers as the linear gain medium. This novel technique allows for

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18

Sieber, Jan. "Longitudinal dynamics of semiconductor lasers." Doctoral thesis, [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963267795.

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19

Boggavarapu, Deepak. "Physics of semiconductor microcavity lasers." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186436.

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The development of the microcavity laser has opened new vistas for exploration in regard to light-matter interaction. Here, we consider several experimental investigations with these smallest of lasers. Injection of an external optical signal into a vertical cavity surface emitting laser (VCSEL) reveals the weak injection regime of frequency locking and the strong injection regime of asymmetric local modification to the semiconductor gain curve. Above laser threshold linewidth measurements allow us to determine the linewidth enhancement factor, in agreement with theory. Below threshold measure

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20

White, John Kenton. "Communication with chaotic semiconductor lasers." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/298812.

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Semiconductor lasers in the presence of weak external optical injection or feedback become unstable, exhibiting optical chaos. I use a multi longitudinal mode partial differential equation model to study many physically observable phenomenon. These include longitudinal mode hops induced by weak external injection and anti-phase dynamics among the longitudinal modes in the presence of weak feedback. Chaotic semiconductor lasers are shown to be good candidates for optical communication: synchronization is robust and messages may be multiplexed through the many longitudinal modes.

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21

Jones, Robin John. "Communicating with chaotic semiconductor lasers." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341222.

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22

Ait-Sadi, Rachida. "Thermal modelling of semiconductor lasers." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334923.

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23

Matin, Mohammad Abdul. "Semiconductor optical waveguides and lasers." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263554.

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24

Curtis, J. P. "Picosecond pulses from semiconductor lasers." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377213.

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25

Langley, Lloyd Nicholas. "Optical feedback in semiconductor lasers." Thesis, University of Bath, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240690.

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26

Yee, Wai Mun. "Spectral properties of semiconductor lasers." Thesis, University of Bath, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240689.

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27

Poguntke, Kai R. "Novel multi-wavelength semiconductor lasers." Thesis, University of Surrey, 1994. http://epubs.surrey.ac.uk/842665/.

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The technique of wavelength division multiplexing (WDM) is currently attracting considerable interest from the telecommunications and computer industries alike as a means both for increasing the transmission rates of existing fiber-optic links and for attaining enhanced flexibility in future optical networks. Studies of WDM systems have indicated the need for a single-output multi-wavelength laser source whose wavelengths can be controlled to within a small fraction of the inter-channel spacing. Furthermore, a monolithically integrated laser source realized by simple processing techniques woul

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28

Coote, Joanna. "Semiconductor lasers as miniature biosensors." Thesis, University of Surrey, 2009. http://epubs.surrey.ac.uk/843373/.

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Biosensors are chemical sensors that use biological materials to detect the presence of the substance of interest. Optical methods to transduce the interaction between the analyte and the biological detection element are highly sensitive, non-invasive and are not subject to noise from electrical interference. Biosensors based on photonic devices such as lasers, optical fibres and photonic crystals offer the possibility of high sensitivity combined with small size, which is highly advantageous for in-the-field and remote applications. In this thesis, the feasibility of using semiconductor laser

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29

Zhu, Xiang. "Tunable diode lasers and their applications in trace gas and liquid detection /." *McMaster only, 1996.

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30

Resan, Bojan. "DISPERSION-MANAGED BREATHING-MODE SEMICONDUCTOR MODE-LOCKED RING LASER." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2907.

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A novel dispersion-managed breathing-mode semiconductor mode-locked ring laser is developed. The "breathing-mode" designation derives from the fact that intracavity pulses are alternately stretched and compressed as they circulate around the ring resonator. The pulses are stretched before entering the semiconductor gain medium to minimize the detrimental strong integrating self-phase modulation and to enable efficient pulse amplification. Subsequently compressed pulses facilitate bleaching the semiconductor saturable absorber. The intracavity pulse compression ratio is higher than 50. Down chi

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31

Warnky, Carolyn May. "Determining spatial modes of semiconductor lasters using spatial coherence." Connect to this title online, 2002. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1022686630.

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Thesis (Ph. D.)--Ohio State University, 2002.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 145 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: Betty Lisle Anderson, Dept. of Electrical Engineering. Includes bibliographical references (p. 140-145).

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32

Holm, Mark. "Vertical external cavity surface emitting semiconductor lasers." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366824.

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33

Peters-Flynn, SioÌ‚n. "Chaos synchronisation phenomena in semiconductor lasers." Thesis, Bangor University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420658.

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34

Furst, Sandor. "Monolithic integration of semiconductor ring lasers." Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/447/.

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The interest in semiconductor ring lasers (SRLs) has been steadily growing in the last few years because of several unique properties such as ultrafast directional bistability, stable single mode operation and potential for integration. However, most of the mode dynamical behavior as well as the optimum device design are still far from a complete understanding. This thesis reports on the design, technological development and characterization of SRLs emitting at 1.55 um, which are monolithically integrated with a number of other optical elements such as tunable couplers, optical amplifiers, Bra

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35

Vetter, Sharon Louise. "Novel applications of semiconductor disk lasers." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=16777.

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36

Chen, Jenkins C. H. "SPICE circuit models for semiconductor lasers." Thesis, De Montfort University, 2000. http://hdl.handle.net/2086/4187.

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37

Lowery, A. J. "Transmission line modelling of semiconductor lasers." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384697.

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38

Williamson, Craig A. "Mode locking of novel semiconductor lasers." Thesis, University of Exeter, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480992.

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39

Ramoo, Desi. "Spontaneous emission factor in semiconductor lasers." Thesis, University of Essex, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402831.

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40

Hastie, Jennifer E. "High power surface emitting semiconductor lasers." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399721.

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41

Wilcox, Keith G. "Ultrashort pulse surface emitting semiconductor lasers." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434098.

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42

Young, John Scott. "Characterisation of Fabry-Perot semiconductor lasers." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285444.

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43

Koh, Ping Chiek. "Modelling of tunable hybrid semiconductor lasers." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392756.

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44

Inoue, Shūichirō. "Squeezed state generation in semiconductor lasers /." Electronic version of summary, 1993. http://www.wul.waseda.ac.jp/gakui/gaiyo/1897.pdf.

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45

Rana, Farhan 1971. "Noise and synamics in semiconductor lasers." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/40022.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.<br>Includes bibliographical references (p. 253-263).<br>In this thesis, theoretical and experimental work on the noise and dynamics in continuous wave and mode-locked semiconductor lasers is presented. The main focus is on semiconductor cascade lasers and semiconductor mode-locked lasers. In semiconductor cascade lasers, multiple gain stages are connected electrically in series. Each electron injected into a cascade laser is capable of producing more than one photon, and the diff

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46

Mihoubi, Zakaria. "Mode-locked surface emitting semiconductor lasers." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/72372/.

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Optically-Pumped Vertical External Cavity Surface Emitting Lasers (OP-VECSELs) arc novel semiconductor-based lasers that have many advantages over other lasers in terms of the power scalability, good beam quality, compactness and low cost they can offer. They can be passively mode-locked with a Semiconductor Saturable Absorber Mirror (SESAM) to produce transformnm-limnited sub-300 fs pulses directly from the laser cavity with high repetition rates. This thesis describes an experimental and theoretical investigation of OP-VECSELs. A full characterization is done on a VECSEL sample to understand

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47

Ghiti, Ali. "Valence band engineering in semiconductor lasers." Thesis, University of Surrey, 1990. http://epubs.surrey.ac.uk/842853/.

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This thesis is concerned with the improvement of semiconductor laser characteristics using valence band engineering. We first show that the combination of strain and quantum confinement can confer considerable advantages to long wavelength lasers. With sufficient built-in strain, the highest hole subband has a low effective mass and is well separated from the lower bands. The low effective mass reduces the carrier density needed for population inversion and leads to the virtual elimination of two important loss mechanisms: Auger recombination and intervalence band absorption. We propose a spec

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48

Goossens, Mark. "Ultrafast organic lasers and solid-state amplifiers." Thesis, St Andrews, 2007. http://hdl.handle.net/10023/315.

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49

Williams, Kevin. "Q-switched diode lasers." Thesis, University of Bath, 1995. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296333.

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50

Morrison, Gordon. "Modelling the spectra of distributed feedback lasers /." *McMaster only, 2002.

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