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Proceedings Paper

Laser-diode interferometry and phase-conjugate optics
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Paper Abstract

Laser diodes have been applied to a phase-measuring interferometer with conventional mirrors and a phase-conjugate interferometer with cat mirrors through the wavelength tunability of laser diodes by controlling their currents. Features of the combination of phase shifting and heterodyning by laser-diode modulation in the interferometer with cat mirrors are reviewed. The wavelength is scanned by the laser injection current and is stepwise or rampwise changed to introduce a time-varying phase difference between the two beams of an interferometer with unbalanced optical path lengths. Cancellation of phase distortions in the interferometer can be performed with wide measurement range. Experimental results are shown.

Paper Details

Date Published: 20 November 2002
PDF: 11 pages
Proc. SPIE 4803, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII, (20 November 2002); doi: 10.1117/12.453585
Show Author Affiliations
Yukihiro Ishii, Univ. of Industrial Technology (Japan)
Takeshi Takahashi, Univ. of Industrial Technology (Japan)
Ribun Onodera, Univ. of Industrial Technology (Japan)


Published in SPIE Proceedings Vol. 4803:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII
Francis T. S. Yu; Ruyan Guo, Editor(s)

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