Download or read book Fabrication Issues and Considerations for High Performance Grating Surface Emitting Semiconductor Lasers written by G. A. Evans and published by . This book was released on 1992 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sketch of a grating-surface-emitting (GSE) laser is shown. The gratings between the gain sections provide feedback for laser oscillation in second order and couple out the laser radiation perpendicular to the surface in both directions in first order. With proper choice of grating parameters, a portion of the light is passed completely through each grating section and serves to injection lock additional gain sections in the longitudinal direction. GSE laser array technology has experienced steady progress over the last two years. Improvements in material quality and uniformity have made it possible to coherently couple two dimensional GSE lasers over distances larger than 1 cm. Figure 2a shows a peak output of 32 W per surface with differential quantum efficiencies of 40 % per surface during pulsed operation. The same device provides a continuous power output of 3.4 W per surface, as shown in Fig. 2b. Variations on the basic GSE laser concept have resulted in Master Oscillator Power Amplifier (MOPA) GSE arrays and continuous grating (CG)-GSE laser arrays. GSE arrays with 10 elements per gain section and 20 gain sections have obtained cw threshold current densities of under 140 A/cm2 with cw differential quantum efficiencies of 20 to 30% per surface. Linewidths in the 40 to 100 MHz range have been obtained with output powers of 100 to 250 mW/surface.

Download or read book High Efficiency Grating coupled Surface emitting Semiconductor Lasers written by Niklas Eriksson and published by . This book was released on 1995 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High coherent power Two dimensional Grating Surface emitting GSE Semiconductor Lasers written by Shuang Li and published by . This book was released on 2006 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fabrication Testing and Reliability of Semiconductor Lasers written by and published by . This book was released on 1997 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Emitting Semiconductor Lasers and Arrays written by Gary A. Evans and published by . This book was released on 1993 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews all the basic types of surface emitting semiconductor lasers, including vertical cavity, etched-mirror integrated beam deflectors and grating out-coupled devices. The book also addresses such topics as edge-emitting arrays, thermal management and coherence.

Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1874 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Design Fabrication and Characterization of High performance Native oxide Confined InGaAs GaAs Quantum well Edge emitting and Surface emitting Lasers written by Yong Cheng and published by . This book was released on 1997 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 1596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Fabrication and Evaluation of High speed Vertical cavity Surface emitting Lasers written by Petter Westbergh and published by . This book was released on 2009 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semiconductor Laser Engineering Reliability and Diagnostics written by Peter W. Epperlein and published by John Wiley & Sons. This book was released on 2013-01-25 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book provides a fully integrated novel approach to the development of high-power, single-transverse mode, edge-emitting diode lasers by addressing the complementary topics of device engineering, reliability engineering and device diagnostics in the same book, and thus closes the gap in the current book literature. Diode laser fundamentals are discussed, followed by an elaborate discussion of problem-oriented design guidelines and techniques, and by a systematic treatment of the origins of laser degradation and a thorough exploration of the engineering means to enhance the optical strength of the laser. Stability criteria of critical laser characteristics and key laser robustness factors are discussed along with clear design considerations in the context of reliability engineering approaches and models, and typical programs for reliability tests and laser product qualifications. Novel, advanced diagnostic methods are reviewed to discuss, for the first time in detail in book literature, performance- and reliability-impacting factors such as temperature, stress and material instabilities. Further key features include: practical design guidelines that consider also reliability related effects, key laser robustness factors, basic laser fabrication and packaging issues; detailed discussion of diagnostic investigations of diode lasers, the fundamentals of the applied approaches and techniques, many of them pioneered by the author to be fit-for-purpose and novel in the application; systematic insight into laser degradation modes such as catastrophic optical damage, and a wide range of technologies to increase the optical strength of diode lasers; coverage of basic concepts and techniques of laser reliability engineering with details on a standard commercial high power laser reliability test program. Semiconductor Laser Engineering, Reliability and Diagnostics reflects the extensive expertise of the author in the diode laser field both as a top scientific researcher as well as a key developer of high-power highly reliable devices. With invaluable practical advice, this new reference book is suited to practising researchers in diode laser technologies, and to postgraduate engineering students.

Download or read book Design and Fabrication of Vertical Cavity Surface Emitting Lasers and Their High Speed Modulation written by Guoying Ding and published by . This book was released on 1997 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Science written by National Research Council and published by National Academies Press. This book was released on 1998-02-01 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 2240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Nanophotonics written by Hilmi Volkan Demir and published by Cambridge University Press. This book was released on 2018-11-22 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible yet rigorous introduction to nanophotonics, covering basic principles, technology, and applications in lighting, lasers, and photovoltaics. Providing a wealth of information on materials and devices, and over 150 color figures, it is the 'go-to' guide for students in electrical engineering taking courses in nanophotonics.