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; Aleksandar D. Rakić

doi:10.1364/OL.36.003690

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, Aleksandar D. Rakić

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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.

Original language	English
Pages (from-to)	3690-3692
Number of pages	3
Journal	Optics Letters
Volume	36
Issue number	18
DOIs	https://doi.org/10.1364/OL.36.003690
Publication status	Published - 15 Sept 2011
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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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.",

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AU - Kliese, Russell

AU - Lim, Yah Leng

AU - Rakić, Aleksandar D.

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AB - 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.

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

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