Ultraviolet diode laser system based on the resonant optical feedback method with the capability of fast continuous sweep |
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| Authors: | K Toyoda Y Kubota T Okano S Urabe |
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| Institution: | (1) Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan;(2) CREST, JST, 4-1-8 Honmachi, Kawaguchi, Saitama 331-0012, Japan |
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| Abstract: | An ultraviolet laser diode system stabilized to an external Fabry–Perot cavity by using the resonant optical feedback method
is described. Both wide continuous sweep with fast response and drift compensation for long term operation are realized simultaneously
by performing feedforward control along with feedback control of the system parameters. By utilizing the capability of synchronized
sweep realized by the feedforward control, the modulation of the output frequency, due to dither for lock-in feedback control
of the system parameters, is almost perfectly canceled. The method described here is useful for developing diode laser systems
for practical use with such features as small short term fluctuation, long-term operability and fast continuous sweep.
PACS 42.55.Px; 42.60.By; 32.80.Pj |
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