Topics covered include wavelength tuning of inasingaaspinp 100. Brosson, semiconductor lasers and integrated devices. Longwavelength semiconductor lasers on ingaas ternary. The key components in this development are transmitters with longwavelength semiconductor lasers. External cavity wavelength tunable semiconductor lasers. The aim was to make the paper as concise as possible without sacrificing. The development during the 1970s of gaas semiconductor lasers, emitting in the nearinfrared region of 0. Research article the wavelengthlocking of highpower. These products include fibercoupled and free space single mode diode lasers, multimode single emitters, multiemitter fiber coupled.
The electrical method uses radio frequency modulation of the gain region to modify effective optical loss at a welldefined wavelength. Fundamentals of semiconductor lasers ebook by takahiro. New approaches to widely tunable semiconductor lasers. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. This updated edition of the leading guide in the fields responds to these developments. Since its invention in 1962, the semiconductor laser has come a long way. Longwavelength semiconductor lasers van nostrand reinhold, new york 1986. Compared to other lasers, diode lasers are cleaved facets very efficient nowadays 100% for the output. As part of our pilas range of gainswitched pulsed diode lasers, we offer two different red lasers. Numerical study of wavelengthswept semiconductor ring lasers.
Nonlinear theory of semiconductor lasers wikipedia. Heterostructure semiconductor lasers prepared by molecular beam epitaxy, ieee j. Research article the wavelengthlocking of highpower 808nm semiconductor laser haixiaguo,zaijinli,huili,fenggao,haibintang,baohuashi,andyiqu national key lab of high power semiconductor lasers, changchun university of science and technology, changchun, jilin, china correspondence should be addressed to yi qu. Osa wavelength dependence of t0 in ingaasp semiconductor. Numerical study of wavelengthswept semiconductor ring.
Springer series in optical sciences book 93 thanks for sharing. Emission spectrum and wavelength shift of algainp index. Pdf generation of optical pulses from long wavelength. Semiconductor lasers, 2nd edition agrawal, govind p. In this thesis, the optical characteristics of allactive microring. Generation of optical pulses from long wavelength semiconductor lasers using qswitching technique article pdf available january 2011 with 52 reads how we measure reads. Since ingaas and ingaasp materials are expected to exhibit a sublinear dependence of gain on carrier density at high carrier densities, the influence of wavelengthselective feedback and. Ganbased short wavelength semiconductor lasers masayoshi koike, sho iwayama, shiro yamasaki, yuta tezen, seiji nagai, akira kojima. The modulation capabilities1 and high temperature performance2 of distributed feedback laser diodes may be enhanced by dfb gratings appropriately detuned from the material gain peak.
Laser waveguides based on surface plasmons at a metalsemiconductor interface have been demonstrated by use of quantum cascade qc lasers emitting in the 811. Lasing wavelengths of indexguided algainp semiconductor. The development during the 1970s of gaas semiconductor lasers. Laser quantum manufacture a wide range of 660 nm and 671 nm red lasers for applications such as dna sequencing, flim, raman imaging and for deexcitation in super resolution microscopy. Nonlinear mode mixing in dualwavelength semiconductor lasers with tunnel junctions article pdf available in applied physics letters 9017. Longwavelength semiconductor lasers govind agrawal. Stanford libraries official online search tool for books, media, journals, databases, government documents and more. We derived the gain g for a fabryperot semiconductor laser based on the density matrix equations and expressions for the natural linewidth. Rpmc lasers offer one of the widest wavelength selections of semiconductor lasers available ranging from the uv through the ir.
Scientists have demonstrated, for the first time, highly directional semiconductor lasers with a much smaller beam divergence than conventional ones. Recent results have demonstrated unprecedented wavelengthtuning speed and repetition rate performance of semiconductor ring lasers incorporating scanning filters. Wavelengthchange characteristics of semiconductor lasers. Agrawal is professor of optics and physics in the institute of optics, university of rochester, usa. Longwavelength semiconductor lasers on ingaas ternary substrates with excellent temperature characteristics vkoji otsubo vyoshito nishijima vhiroshi ishikawa manuscript received june 4,1998 this paper proposes the use of ingaas ternary bulk substrates as a technical breakthrough in longwavelength semiconductor lasers. However, several unique operational characteristics of these lasers have not been adequately explained, and the lack of an accurate model has hindered optimization.
Temperature dependence of long wavelength semiconductor lasers j. We study experimentally and numerically electrical and optical methods to switch the lasing wavelength in a linear multicavity laser. Thus, the linewidth theory is an integral part of the nonlinear theory. Longwavelength semiconductor lasers in searchworks catalog. While gainaspinp distributed feedback lasers are wellestablished light sources for longhaul 1. Semiconductor lasers comparison with leds the light emitted by a laser is generally more directional, more intense and has a narrower frequency distribution than light from an led. Temperature dependence of long wavelength semiconductor. Study of semiconductor microring lasers for use in. From cost point of view the semiconductor lasers are economical.
The external efficiency of a laser is much greater than that of an led. Thomson, physics of semiconductor laser devices, john wiley, 1980. Recent research into semiconductor nanowire lasers has resulted in the advent of new materials, a broader wavelength selection and effective electrical pumping schemes, thereby bringing these. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Smaller size and appearance make them good choice for many applications. This chapter considers some results for lasers of both types operating in the range. Agrawal and his colleagues provide in this book a series of excellent papers focusing new applications of algaas and others semiconductor lasers. Numerous and frequentlyupdated resource results are available from this search. Buy longwavelength semiconductor lasers by govind agrawal from waterstones today. To date, a number of binary semiconductor nw lasers with discrete wavelengths ranging from ultraviolet to near infrared have been reported.
Transient response of a semiconductor laser wolfram. It presents the state of the art of semiconductor lasers emitting in the wavelength range. Broadly defining lasing wavelengths in single bandgap. Longwavelength nitride lasers on gaas sciencedirect. The guided modes are transverse magnetic polarized surface waves that propagate at the metal pd or tiausemiconductor interface between the laser top contact and the active. Advances in material purity and epitaxial growth techniques have led to a variety of semiconductor lasers covering a wide wavelength range of 0. A path to highpower, quality beam and uv to ir wavelength by design mark kuznetsov 1. Study of semiconductor microring lasers for use in wavelength division multiplexing wdm telecommunication networks.
Wavelengthchange characteristics of semiconductor lasers and their application to holographic contouring. It incorporates the latest advances in the design and performance of. Recent advances in long wavelength quantum dot lasers. Todays highspeed lasers operating at the wavelengths 1.
Journal editorial boards, books and public outreach as of. Focus is on the inasingaaspinp 100 materials system as the materials system of choice for 1. Iiiv nitride semiconductor laser diodes lds have been improved to the grade of a. For semiconductor lasers, the saturation effect is negligible. Applications of semiconductor lasers in optical communications and other lightwave technologies have expanded considerably in recent years. It incorporates the latest advances in the design and performance of semiconductor lasers for lightwave transmission systems, and helps engineers design high quality.
Nature of wavelength chirping in directly modulated. New semiconductor lasers herald wide range of applications. Bouma harvard medical school and wellman center for photomedicine, massachusetts general hospital. Role of quantum dots quantumdot semiconductor lasers 235 p.
See semiconductor lasers operating principle pdf and high speed lasers pdf on the authors website for more information. Rp photonics encyclopedia red lasers, laser diodes. The mechanism responsible for the operation of conventional semiconductor lasers involves stimulated emission of electron and hole pairs bound by. Semiconductor lasers types, applications, construction.
External cavity tunable lasers have been around for many years and now constitute a large group of semiconductor lasers featuring very unique properties. The dependence of doubleheterostructure algaas semiconductor laser wavelength on injection current and temperature was investigated by means of a michelson interferometer. It ranges from the basic intracavity equations to optical biestability, four wave mixing, the laser synthetizer and optical communications. The rp photonics buyers guide contains 106 suppliers for semiconductor lasers. Agrawal editorial board member, microwave and optical technology letters 1998now. Longwavelength semiconductor lasers by govind agrawal. Norwell, massachusetts, kluwer academic publishers, 1993, 630pp.
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