Measuring the sensitivity to optical feedback of single-frequency high-power laser diodes

Mathias Christensen, Christof Zink, Muhammad Tahir Jamal, Anders Kragh Hansen, Ole Bjarlin Jensen*, Bernd Sumpf

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Laser diodes, in general, are sensitive to optical feedback, especially with regard to maintaining single-frequency operation. Until now, however, the feedback sensitivity of high-power devices such as single-frequency distributed Bragg reflector (DBR) tapered laser diodes has not been investigated in quantitative detail. In this paper, we analyze the impact of very weak optical feedback between -105 dB and -40 dB on a high-power DBR tapered laser diode. The measurement setup is validated using a typical DFB laser diode. The results are in good agreement with the theory at low-feedback levels. (C) 2021 Optical Society of America
Original languageEnglish
JournalJournal of the Optical Society of America B-optical Physics
Volume38
Issue number3
Pages (from-to)885-892
ISSN0740-3224
DOIs
Publication statusPublished - 2021

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