Modal Gain of 2.4- $\mu$ m InGaAsSb–AlGaAsSb Complex-Coupled Distributed-Feedback Lasers

J. A. Gupta,P. J. Barrios,J. Lapointe,G. C. Aers,C. Storey,P. Waldron

IEEE Photonics Technology Letters（2009）

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摘要

High-resolution spectroscopy was used to examine gain characteristics of Cr-grating complex-coupled distributed-feedback (DFB) lasers near 2.4 $\mu$m. The single-mode lasers contain InGaAsSb–AlGaAsSb active regions grown by molecular beam epitaxy on GaSb. Modal gain was extracted from the measured amplified spontaneous emission spectra and compared with reference Fabry–PÉrot lasers. The material g...

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关键词

Gas lasers,Gratings,Optical waveguides,Semiconductor lasers,Chromium,Absorption,Etching,Spectroscopy,Molecular beam epitaxial growth,Gain measurement

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