Determination of single-pass optical gain and internal loss using a multisection device

被引:105
作者
Thomson, JD [1 ]
Summers, HD [1 ]
Hulyer, PJ [1 ]
Smowton, PM [1 ]
Blood, P [1 ]
机构
[1] Univ Wales, Dept Phys & Astron, Cardiff CF2 3YB, S Glam, Wales
关键词
D O I
10.1063/1.125066
中图分类号
O59 [应用物理学];
学科分类号
摘要
We describe a technique for the measurement of optical gain and loss in semiconductor lasers using a single, multisection device. The method provides a complete description of the gain spectrum in absolute units and over a wide current range. Comparison of the transverse electric and transverse magnetic polarized spectra also provides the quasi-Fermi-level energy separation. Measurements on AlGaInP quantum well laser structures with emission wavelengths close to 670 nm show an internal loss of 10 cm(-1) and peak gain values up to 4000 cm(-1) for current densities up to 4 kA cm(-2). (C) 1999 American Institute of Physics. [S0003-6951(99)04243-6].
引用
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页码:2527 / 2529
页数:3
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