February 2016
Intermediate to advanced
452 pages
16h 17m
English
Content preview from Tunable Laser Applications, 3rd Edition
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Chapter 5
Broadly Tunable External-Cavity Semiconductor Lasers
F. J. Duarte
5.1 Introduction
Tunable semiconductor lasers have become widely used in a plethora of applications, including communications, imaging, interferometry, medicine, metrology, remote sensing, and spectroscopy. The advantages of tunable semiconductor lasers include direct electrical excitation, compactness, low cost, and simplicity.
The approximate spectral coverage available from tunable semiconductor lasers is outlined in Table 5.1. The most widely used tunable external-cavity semiconductor (ECS) lasers belong to the III–V classification and employ GaAlInP, GaAlAs, and InGaAsP semiconductors. The single-device continuous-wave (CW) power levels offered by these lasers, ...
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