By Govind P. Agrawal
Because its invention in 1962, the semiconductor laser has come far. Advances in fabric purity and epitaxial development recommendations have resulted in quite a few semiconductor lasers overlaying a large wavelength variety of zero. three- a hundred ~m. the improvement in the course of the Seventies of GaAs semiconductor lasers, emitting within the near-infrared area of zero. 8-0. nine ~m, ended in their use for the 1st iteration of optical fiber verbal exchange platforms. in spite of the fact that, to make the most oflow losses in silica fibers happening round 1. three and 1. fifty five ~m, the emphasis quickly shifted towards long-wavelength semiconductor lasers. the cloth method of selection during this wavelength variety has been the quaternary alloy InGaAsP. over the past 5 years or so, the serious improvement attempt dedicated to InGaAsP lasers has led to a expertise mature sufficient that lightwave transmission platforms utilizing InGaAsP lasers are at the moment being deployed in the course of the global. This ebook is meant to supply a complete account of long-wave size semiconductor lasers. specific recognition is paid to InGaAsP lasers, even though we additionally reflect on semiconductor lasers working at longer wave lengths. the target is to supply an up to date realizing of semicon ductor lasers whereas incorporating fresh examine effects that aren't but on hand within the publication shape. even if InGaAsP lasers are frequently used for example, the elemental techniques mentioned during this textual content follow to all semiconductor lasers, regardless of their wavelengths.