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Effect of optical feedback noise on tunable diode laser spectroscopy

Effect of optical feedback noise on tunable diode laser spectroscopy,10.1007/s00340-007-2823-3,Applied Physics B-lasers and Optics,M. Fukuda,S. Ooyama

Effect of optical feedback noise on tunable diode laser spectroscopy  
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The effect of optical feedback noise of a laser diode on the stability of gas-absorption spectra was investigated by monitoring the optical absorption of CO2 gas. Lasing longitudinal mode instability greatly degraded the shape of the absorption spectra, and coherence collapse in the laser diode greatly broadened the spectra. The correlation between the optical feedback noise of the laser diode and the shape of the gas-absorption spectra was clarified on the basis of these spectral behaviors.
Journal: Applied Physics B-lasers and Optics - APPL PHYS B-LASERS OPT , vol. 90, no. 2, pp. 269-272, 2008
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