Single-mode, narrow-linewidth external cavity quantum cascade laser through optical feedback from a partial-reflector | Zendy

Richard Cendejas | Zendy; Mark C. Phillips | Zendy; Tanya L. Myers | Zendy; Matthew S. Taubman | Zendy

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Single-mode, narrow-linewidth external cavity quantum cascade laser through optical feedback from a partial-reflector

Author(s) -

Richard Cendejas,

Mark C. Phillips,

Tanya L. Myers,

Matthew S. Taubman

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.026037

Subject(s) - laser linewidth , optics , laser , quantum cascade laser , distributed feedback laser , cascade , materials science , reflector (photography) , injection seeder , optoelectronics , physics , light source , chemistry , chromatography

An external-cavity (EC) quantum cascade (QC) laser using optical feedback from a partial-reflector is reported. With this configuration, the otherwise multi-mode emission of a Fabry-Perot QC laser was made single-mode with optical output powers exceeding 40 mW. A mode-hop free tuning range of 2.46 cm(-1) was achieved by synchronously tuning the EC length and QC laser current. The linewidth of the partial-reflector EC-QC laser was measured for integration times from 100 μs to 4 seconds, and compared to a distributed feedback QC laser. Linewidths as small as 480 kHz were recorded for the EC-QC laser.

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