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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 18 — Sep. 15, 2011
  • pp: 3690–3692

Maintaining maximum signal-to-noise ratio in uncooled vertical-cavity surface-emitting laser-based self-mixing sensors

Ranveer S. Matharu, Julien Perchoux, Russell Kliese, Yah Leng Lim, and Aleksandar D. Rakić  »View Author Affiliations


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 20 ° C and + 80 ° C .

© 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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