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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5517–5525

Self-mixing imaging sensor using a monolithic VCSEL array with parallel readout

Yah Leng Lim, Milan Nikolic, Karl Bertling, Russell Kliese, and Aleksandar D. Rakić  »View Author Affiliations


Optics Express, Vol. 17, Issue 7, pp. 5517-5525 (2009)
http://dx.doi.org/10.1364/OE.17.005517


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Abstract

The advent of two-dimensional arrays of Vertical-Cavity Surface-Emitting Lasers (VCSELs) opened a range of potential sensing applications for nanotechnology and life-sciences. With each laser independently addressable, there is scope for the development of high-resolution full-field imaging systems with electronic scanning. We report on the first implementation of a self-mixing imaging system with parallel readout based on a monolithic VCSEL array. A self-mixing Doppler signal was acquired from the variation in VCSEL junction voltage rather than from a conventional variation in laser power, thus markedly reducing the system complexity. The sensor was validated by imaging the velocity distribution on the surface of a rotating disc. The results obtained demonstrate that monolithic arrays of Vertical-Cavity lasers present a powerful tool for the advancement of self-mixing sensors into parallel imaging paradigms and provide a stepping stone to the implementation of a full-field self-mixing sensor systems.

© 2009 Optical Society of America

OCIS Codes
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers
(280.3420) Remote sensing and sensors : Laser sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Optical sensing and sensors

History
Original Manuscript: January 23, 2009
Revised Manuscript: March 11, 2009
Manuscript Accepted: March 11, 2009
Published: March 23, 2009

Citation
Yah Leng Lim, Milan Nikolic, Karl Bertling, Russell Kliese, and Aleksandar D. Rakic, "Self-mixing imaging sensor using a monolithic VCSEL array with parallel readout," Opt. Express 17, 5517-5525 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-7-5517


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