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Actively stabilized single-frequency vertical-external-cavity AlGaAs laser

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4 Author(s)
Holms, M.A. ; Inst. of Photonics, Strathclyde Univ., Glasgow, UK ; Burns, D. ; Ferguson, A.I. ; Dawson, M.D.

We report on actively stabilized single-frequency operation of a vertical-external-cavity surface-emitting semiconductor laser (VECSEL). The VECSEL was locked to a 300-MHz reference cavity allowing a relative frequency measurement that indicated a laser linewidth of 3 kHz. Coarse tuning over an 8.5-nm range was achieved, with fine tuning over 250 MHz. The laser produced up to 42 mW of output power in single-frequency operation.

Published in:

Photonics Technology Letters, IEEE  (Volume:11 ,  Issue: 12 )