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

J. D. Thomson, H. D. Summers, P. J. Hulyer, P. M. Smowton, P. Blood

Research output: Contribution to journalArticle

112 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)2527-2529
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number17
DOIs
StatePublished - Oct 25 1999

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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