Phase-sensitive laser detection by frequency-shifted optical feedback
- Laboratoire de Spectrometrie Physique, UMR CNRS 5588, Universite Joseph Fourier de Grenoble, 38402 Saint Martin d'Heres (France)
For further interferometric application on diffusive target, the phase fluctuation of a solid-state laser submitted to frequency shifted optical feedback is analyzed both theoretically and experimentally. As a drawback of the laser high sensitivity to optical feedback, the phase fluctuations induced by a strong phase-amplitude coupling noise are several orders of magnitude higher than the standard interferometric phase noise induced by the laser frequency width (Schawlow-Townes limit). Nevertheless, by sending a few milliwatts output power microchip laser beam on a diffusive target with an effective reflectivity of 10{sup -9}, a target displacement precision of 0.1 A/{radical}(Hz) has been experimentally determined.
- OSTI ID:
- 20646294
- Journal Information:
- Physical Review. A, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevA.70.053824; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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