Influence of optical feedback on laser frequency spectrum and threshold conditions

Jens Henrik Osmundsen, Niels Gade

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Abstract

The steady state behavior of the external cavity operated laser has been analyzed, taking into account multiple reflections. The effect of optical feedback is included in the phase- and gain-conditions by a factor which is shown to have a simple geometrical representation. From this representation it is easily seen how the laser frequency spectrum and the threshold gain depend on external parameters such as distance to the reflection point and the amount of optical feedback. Furthermore, by inserting a variable attenuator in the external cavity and measuring the threshold current versus transmittance we have simultaneously determined the photon lifetime and the absolute amount of optical feedback. For the laser considered we found the photon lifetimetau_{p} = 1.55ps.
Original languageEnglish
JournalI E E E Journal of Quantum Electronics
Volume19
Issue number3
Pages (from-to)465-469
ISSN0018-9197
DOIs
Publication statusPublished - 1983

Bibliographical note

Copyright: 1983 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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