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Maintaining maximum signal-to-noise ratio in uncooled vertical-cavity surface-emitting laser-based self-mixing sensors |
Optics Letters, Vol. 36, Issue 18, pp. 3690-3692 (2011)
http://dx.doi.org/10.1364/OL.36.003690
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Abstract
We demonstrate a method for maintaining the maximum signal-to-noise ratio (SNR) of the signal obtained from the self-mixing sensor based on a vertical-cavity surface-emitting laser (VCSEL). It was found that the locus of the maximum SNR in the current-temperature space can be well approximated by a simple analytical model related to the temperature behavior of the VCSEL threshold current. The optimum sensor performance is achieved by tuning the laser current according to the proposed model, thus enabling the sensor to operate without temperature stabilization in a wide temperature range between
© 2011 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.2020) Lasers and laser optics : Diode lasers
(140.7300) Lasers and laser optics : Visible lasers
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: June 24, 2011
Manuscript Accepted: August 9, 2011
Published: September 15, 2011
Citation
Ranveer S. Matharu, Julien Perchoux, Russell Kliese, Yah Leng Lim, and Aleksandar D. Rakić, "Maintaining maximum signal-to-noise ratio in uncooled vertical-cavity surface-emitting laser-based self-mixing sensors," Opt. Lett. 36, 3690-3692 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3690
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