Tunable ring laser with internal injection seeding and an optically-driven photonic crystal reflector

Continuous tuning over a 1.6 THz region in the near-infrared (842.5-848.6 nm) has been achieved with a hybrid ring/external cavity laser having a single, optically-driven grating reflector and gain provided by an injection-seeded semiconductor amplifier. Driven at 532 nm and incorporating a photonic...

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Bibliographic Details
Published in:Optics express 2012-06, Vol.20 (13), p.14292-14301
Main Authors: Zheng, Jie, Ge, Chun, Wagner, Clark J, Lu, Meng, Cunningham, Brian T, Hewitt, J Darby, Eden, J Gary
Format: Article
Language:English
Subjects:
Amplifiers, Electronic
Computer-Aided Design
Crystallization
Equipment Design
Equipment Failure Analysis
Lasers
Photons
Semiconductors
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Summary:Continuous tuning over a 1.6 THz region in the near-infrared (842.5-848.6 nm) has been achieved with a hybrid ring/external cavity laser having a single, optically-driven grating reflector and gain provided by an injection-seeded semiconductor amplifier. Driven at 532 nm and incorporating a photonic crystal with an azobenzene overlayer, the reflector has a peak reflectivity of ~80% and tunes at the rate of 0.024 nm per mW of incident green power. In a departure from conventional ring or external cavity lasers, the frequency selectivity for this system is provided by the passband of the tunable photonic crystal reflector and line narrowing in a high gain amplifier. Sub - 0.1 nm linewidths and amplifier extraction efficiencies above 97% are observed with the reflector tuned to 842.5 nm.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.014292