1.35 W of stable single-frequency emission from an external-cavity tapered oscillator utilizing fiber Bragg grating feedback

An external-cavity tapered diode laser utilizing fiber Bragg grating feedback was designed to oscillate on a single-longitudinal mode. Stable single-longitudinal mode operation was attained at powers as high as 1.35 W. The emission frequency tuned smoothly with current over the cavity’s free spectra...

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Bibliographic Details
Published in:Applied physics letters 1998-08, Vol.73 (5), p.575-577
Main Authors: Goyal, A. K., Gavrilovic, P., Po, H.
Format: Article
Language:English
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Summary:An external-cavity tapered diode laser utilizing fiber Bragg grating feedback was designed to oscillate on a single-longitudinal mode. Stable single-longitudinal mode operation was attained at powers as high as 1.35 W. The emission frequency tuned smoothly with current over the cavity’s free spectral range of 6 GHz. The power in the lasing mode was >30 dB above the background amplified spontaneous emission and the side-mode suppression ratio was >15 dB. No deterioration in the beam quality was measurable up to the highest output power. The coupling efficiency into a Gaussian resonator mode was >65% up to 1.35 W.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.121860