Precision and fast wavelength tuning of a dynamically phase-locked widely-tunable laser

We report a precision and fast wavelength tuning technique demonstrated for a digital-supermode distributed Bragg reflector laser. The laser was dynamically offset-locked to a frequency-stabilized master laser using an optical phase-locked loop, enabling precision fast tuning to and from any frequen...

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Bibliographic Details
Published inOptics express Vol. 20; no. 13; pp. 14234 - 14243
Main Authors Numata, Kenji, Chen, Jeffrey R, Wu, Stewart T
Format Journal Article
LanguageEnglish
Published United States 18.06.2012
Subjects
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Lasers
Light
Refractometry - instrumentation
Scattering, Radiation
Signal Processing, Computer-Assisted - instrumentation
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Summary:We report a precision and fast wavelength tuning technique demonstrated for a digital-supermode distributed Bragg reflector laser. The laser was dynamically offset-locked to a frequency-stabilized master laser using an optical phase-locked loop, enabling precision fast tuning to and from any frequencies within a ~40-GHz tuning range. The offset frequency noise was suppressed to the statically offset-locked level in less than ~40 μs upon each frequency switch, allowing the laser to retain the absolute frequency stability of the master laser. This technique satisfies stringent requirements for gas sensing lidars and enables other applications that require such well-controlled precision fast tuning.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.20.014234