Tunable semiconductor laser with liquid crystal pixel mirror in grating-loaded external cavity
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DOI
10.1049/el:19990960
Abstract
The wavelength of a commercial red pointer laser diode has been tuned over 4nm digitally in 0.2nm steps with a folded telescopic gating loaded external cavity incorporating a liquid crystal pixel mirror. The sidemode-suppression ratio of the laser was better than 20dB throughout this range.