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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 26, Iss. 19 — Oct. 1, 2001
  • pp: 1483–1485

Laser relaxation-oscillation frequency imaging

E. Lacot, R. Day, J. Pinel, and F. Stoeckel  »View Author Affiliations


Optics Letters, Vol. 26, Issue 19, pp. 1483-1485 (2001)
http://dx.doi.org/10.1364/OL.26.001483


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Abstract

We describe a new imaging technique based on modification of laser relaxation frequency induced by coherent optical feedback from an external target. A direct comparison (both theoretical and experimental) is made with laser feedback interferometry techniques, in which there is a modification of the laser's steady state. We show that, for a laser with a cavity damping rate γc higher than the population damping rate, γ1 , the modification of the laser relaxation frequency can be several orders of magnitude more sensitive than the perturbation of the laser's output power. Application of this technique to imaging is reported.

© 2001 Optical Society of America

OCIS Codes
(030.1670) Coherence and statistical optics : Coherent optical effects
(110.2970) Imaging systems : Image detection systems
(270.3430) Quantum optics : Laser theory
(280.3420) Remote sensing and sensors : Laser sensors

Citation
E. Lacot, R. Day, J. Pinel, and F. Stoeckel, "Laser relaxation-oscillation frequency imaging," Opt. Lett. 26, 1483-1485 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-19-1483


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