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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 41 to 50 of 285 (0.092 seconds)| 41 |
Using thermal profiling to monitor optical feedback in semiconductor lasers /Kapusta, Evelyn W. January 2005 (has links) (PDF)
Undergraduate honors paper--Mount Holyoke College, 2005. Dept. of Physics. / Includes bibliographical references (leaves 73-74).
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| 42 |
All-epitaxial mode- and current-confined GaAs-based vertical-cavity surface-emitting lasersLu, Dingyuan, January 1900 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.
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Self-consistent modelling of buried heterostructure lasersGurney, Phillip C. R. January 1992 (has links)
No description available.
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Investigation of a semiconductor waveguide optical routing deviceGreen, M. R. January 1996 (has links)
No description available.
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| 45 |
Q-switched diode lasersWilliams, Kevin January 1995 (has links)
No description available.
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Indium phosphide based multiple quantum well lasers : physics and applicationsSeltzer, Colin Phillip January 1994 (has links)
Multiple quantum well lasers based on the III-V compound semiconductor indium phosphide were studied in this thesis. Systematic investigations were carried out on the effects of quantisation and strain on the temperature sensitivity of threshold current, modulation properties, external cavity operation and the 'gain lever' effect. Trends in the temperature sensitivity of threshold current for lasers of various lengths and quantum well numbers can be understood in terms of the nonlinear gain-current density relation. However, compared to bulk active region devices there was no significant improvement. It is unclear at present whether this is due to the temperature sensitivity of optical gain or Auger recombination. Relative intensity noise measurements were used to compare the modulation properties of lattice-matched and strained MQW lasers. This method gives an estimate of the differential gain and was used to study the properties of devices which were unsuitable for high speed applications. These measurements showed that gain saturation and carrier transport effects may be significant in certain laser structures. Band-filling effects due to the reduced volume and modified density of states were utilised in the demonstration of a grating external cavity laser operating across the 1.3 mum optical fibre window. This configuration results in single-mode operation across the gain spectrum of the laser. High output power was exhibited across a wide tuning range. The 'gain lever' effect uses the nonlinear gain-current density relation to enhance the amplitude modulation efficiency and the signal-to-noise-ratio. MQW and bulk devices of different length and split ratio were compared. It was seen experimentally and numerically that the nonlinearity causing this effect also increases the distortion. Finally, it is discussed that further modifications to laser properties may be seen in active regions incorporating quantum wires and boxes.
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Determining spatial modes of semiconductor lasters using spatial coherence /Warnky, Carolyn May January 2002 (has links)
No description available.
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| 48 |
Die bonding of diode lasers /Fritz, Mark A. Cassidy, Daniel Thomas. January 2004 (has links)
Thesis (Ph.D.)--McMaster University, 2004. / Advisor: Daniel T. Cassidy. Includes bibliographical references (p. 124-127).
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Dynamics of distributed feedback lasersTsang, Chi Foon January 1993 (has links)
No description available.
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Optical sources for datacommunicationsThilakumara, Rohana Priyantha January 2001 (has links)
No description available.
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