Download or read book Antiguided Vertical cavity Surface emitting Laser vcsel Structures written by Delai Zhou and published by . This book was released on 2002 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Mode Passive Antiguide Region Vertical Cavity Surface Emitting Laser written by Yong'an Wu and published by . This book was released on 1998 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Trends In Vertical Cavity Surface Emitting Lasers written by Tien Pei Lee and published by World Scientific. This book was released on 1995-07-26 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: With significant progress made in recent years, vertical cavity surface emitting lasers (VCSELs) have emerged as potential lightwave sources with a variety of applications, including high speed optical interconnects, parallel data links, optical recording, 2-D scanning, and optical signal processing. This volume, which contains a collection of articles by outstanding experts on this topic, encompasses a broad discussion of the current trends in the development of VCSELs. Discussions include material growths, structure designs, processing methods, performance analysis, improvement strategies, and future prospects. The collection provides a comprehensive overview that may help newcomers to this field as well as engineers and researchers who are engaged in the research and development of this new exciting device family.
Download or read book Vertical Cavity Surface Emitting Lasers written by Terence Edward Sale and published by Wiley-Blackwell. This book was released on 1995 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from basic principles, this book provides coverage of the operation and design of Vertical Cavity Surface Emitting Lasers (VCSELs). It includes original experimental work, backed up by calculations and theoretical analysis, and reviews work already done in the field.
Download or read book Vertical Cavity Surface Emitting Lasers written by Julian Cheng and published by CRC Press. This book was released on 2000-07-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since first coming into existence in the early 90s, the vertical-cavity surface-emitting laser (VCSEL) has made several quantum leaps in performance. The performance of VCSELs now exceeds that of edge-emitting lasers in many respects, and offers a superior optical beam and much easier monolithic integrability. As the VCSEL technology improves furth
Download or read book Vertical cavity Surface emitting Lasers written by and published by . This book was released on 2002 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two dimensional 2D Active Photonic Lattice Vertical cavity Surface emitting Lasers written by Ling Bao and published by . This book was released on 2007 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis and Design of Vertical Cavity Surface Emitting Lasers written by S. F. Yu and published by John Wiley & Sons. This book was released on 2003-09-04 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, hands-on guidebook for the efficient modeling of VCSELs Vertical Cavity Surface Emitting Lasers (VCSELs) are a unique type of semiconductor laser whose optical output is vertically emitted from the surface as opposed to conventional edge-emitting semiconductor lasers. Complex in design and expensive to produce, VCSELs nevertheless represent an already widely used laser technology that promises to have even more significant applications in the future. Although the research has accelerated, there have been relatively few books written on this important topic. Analysis and Design of Vertical Cavity Surface Emitting Lasers seeks to encapsulate this growing body of knowledge into a single, comprehensive reference that will be of equal value for both professionals and academics in the field. The author, a recognized expert in the field of VCSELs, attempts to clarify often conflicting assumptions in order to help readers achieve the simplest and most efficient VCSEL models for any given problem. Highlights of the text include: * A clear and comprehensive theoretical treatment of VCSELs * Detailed derivations for understanding the operational principles of VCSELs * Mathematical models for the investigation of electrical, optical, and thermal properties of VCSELs * Case studies on the mathematical modeling of VCSELs and the implementation of simulation programs
Download or read book Phase locked Arrays of Vertical cavity Surface emitting Lasers written by Mial E. Warren and published by . This book was released on 2005 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertical Cavity Surface-Emitting Lasers (VCSELs) are of increasing interest to the photonics community because of their surface-emitting structure, simple fabrication and packaging, wafer-level testability and potential for low cost. Scaling VCSELs to higher power outputs requires increasing the device area, which leads to transverse mode control difficulties if devices become larger than 10-15 microns. One approach to increasing the device size while maintaining a well controlled transverse mode profile is to form coupled or phase-locked, two-dimensional arrays of VCSELs that are individually single-transverse mode. The authors have fabricated and characterized both photopumped and electrically injected two-dimensional VCSEL arrays with apertures over 100 microns wide. Their work has led to an increased understanding of these devices and they have developed new types of devices, including hybrid semiconductor/dielectric mirror VCSEL arrays, VCSEL arrays with etched trench, self-aligned, gold grid contacts and arrays with integrated phase-shifters to correct the far-field pattern.
Download or read book Selectively Oxidized Patterned InP based Vertical Cavity Surface Emitting Lasers and VCSEL Arrays written by Herte Gebretsadik and published by . This book was released on 1999 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the development of low loss optical fibers over 25 years ago, optical communications has become the system of choice for worldwide communication networks. Some of the many advantages over previous systems include: large transmission bandwidth, immunity to electromagnetic interference, low transmission loss, low weight, low power consumption, and relatively low cost. As multimedia services including the internet, cable television, high definition television (HDTV), and computer links become indispensable in our daily lives, large amounts of data must be transmitted through the information highway. This poses a serious challenge on the current communication network.
Download or read book Two Element Phased Array of Anti Guided Vertical Cavity Lasers written by and published by . This book was released on 1999 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We demonstrate for the first time anti-guided coupling of two adjacent vertical-cavity surface-emitting lasers (VCSEL's), obtaining a 1-by-2 phase-locked array at 869 nm. The lateral index modification required for anti-guiding is achieved by a patterned 3-rim etch performed between two epitaxial growths. In contrast with prior evanescently coupled VCSEL's, adjacent anti-guided VCSEL's can emit in-phase and produce a single on-axis lobe in the far field. Greater than 2 mW of in-phase output power is demonstrated with two VCSEL's separated by 8 [mu]m. Moreover, phase locking of two VCSEL's separated by 20 [mu]m is observed, indicating the possibility of a new class of optical circuits based upon VCSEL's that interact horizontally and emit vertically.
Download or read book Investigations of Optical Properties of Active Regions in Vertical Cavity Surface Emitting Lasers Grown by MBE written by K. Reginski and published by . This book was released on 2002 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of vertical cavity surface emitting lasers (VCSELs) requires an understanding of the many different optical parameters of these structures, and the optimization of VCSELs requires deep understanding of the optical processes occurring in the active regions of such lasers. In a series of MBE processes, active regions of VCSELs as well as whole VCSELs were grown. The active regions of the VCSEL structures were designed for lambda = 1000 nanometers and 980 nanometer emission. They consisted of a pair of distributed Bragg reflectors (DBRs) composed of Aluminum Arsenide (AlAs) and Gallium Arsenide (GaAs) quarter wavelength layers and cavities made of GaAs. The cavities contained one or several quantum wells (QWs) made of In(0.2)Ga(0.8)As. To optimize the optical characteristics of the active regions, several experimental methods were applied. The Bragg reflectors and the entire microcavities were investigated by optical reflectivity. For selective excitation of a QW in a cavity active layer, a Ti-sapphire tuneable laser was used. The fine tuning between the QW emission and the cavity Fabry-Perot resonance was investigated by photoluminescence at varying temperatures of the sample. For monitoring the temporal evolution of the luminescence from the active region of the laser, time-resolved spectroscopy was employed. The combination of many methods of optical investigation enabled the authors to conduct a comprehensive characterization of VCSELs and, consequently, an optimization of the whole laser structure. (8 figures, 8 refs.).
Download or read book Vertical Cavity Surface Emitting Lasers VCSELs and VCSEL Arrays for Communication and Sensing written by Nasibeh Haghighi and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Fabrication of 850 and 980 Nm Vertical Cavity Surface Emitting Laser written by and published by . This book was released on 2004 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertical-cavity surface-emitting lasers (VCSEL) are the most suitable light sources for certain optoelectronic applications because of their planner nature of light emission. VCSELs on GaAs substrates were grown by the molecular beam epitaxy technique. In this report we present detailed procedures to design and fabricate 850-nm top-emitting and 980-nm bottom-emitting VCSELs. First a test structure was grown by the molecular-beam epitaxy (MBE) technique and was characterized by reflectance and photoluminescence techniques. We used a wet oxidation process for current confinement in the laser structure. The VCSELs have low threshold current, low voltage drop and hence are suitable for hybridization onto silicon MOS circuits.
Download or read book Advances in Vertical Cavity Surface Emitting Lasers written by Connie J. Chang-Hasnain and published by . This book was released on 1997 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Increased Reliability Vertical Cavity Surface Emitting Laser Arrays written by and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertical Cavity Surface Emitting Lasers (VCSELs) should see increasing use for short distance optical interconnects in the next 5-10 years: data rate requirements will exceed 10 Gbit/second. It was shown in the proposal that at these data rates electrical current requirements on the VCSELs cause excessive failure rates due to current mitigated defect formation and thermal rise in the active region. Here the thermal rise is addressed through reduction of thermal impedance from the active region to the heat sink. For 40 Gbit/second VCSELs, a reduction of thermal impedance from 1500 C/W to 100 C/W will increase mean lifetime from minutes to years. We proposed to achieve this reduction via flip-chip bonding of the VCSEL, using solder bonding directly to the VCSEL's active area, in conjunction with a reduction of the associated mirror stack via incorporation of metal reflectors. We have achieved 500 C/W, albeit with increased failure rate at a given active region temperature due to bond stresses. This quandary of being able to reduce thermal impedance by bonding near the active region to provide a direct heat path, but at the same time increasing failure rate at a given temperature because of the mechanical stresses induced needs to be addressed in future work.
Download or read book Design and Fabrication of 850 and 980 Nm Vertical Cavity Surface Emitting Laser written by N. C. Das and published by . This book was released on 2004 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertical-cavity surface-emitting lasers (VCSEL) are the most suitable light sources for certain optoelectronic applications because of their planner nature of light emission. VCSELs on GaAs substrates were grown by the molecular beam epitaxy technique. In this report we present detailed procedures to design and fabricate 850-nm top-emitting and 980-nm bottom-emitting VCSELs. First a test structure was grown by the molecular-beam epitaxy (MBE) technique and was characterized by reflectance and photoluminescence techniques. We used a wet oxidation process for current confinement in the laser structure. The VCSELs have low threshold current, low voltage drop and hence are suitable for hybridization onto silicon MOS circuits.
