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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 7 — Mar. 1, 2009
  • pp: C86–C91

Dual-mode single-crystal photoelastic modulator and possible applications

Rok Petkovšek, Ferdinand Bammer, Dieter Schuöcker, and Janez Možina  »View Author Affiliations

Applied Optics, Vol. 48, Issue 7, pp. C86-C91 (2009)

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A new type of acousto-optic device based on a Li Ta O 3 crystal is presented. A harmonic voltage with a proper frequency applied to the piezoelectric Li Ta O 3 crystal generates mechanical oscillations in the material. Due to photoelasticity, an artificial modulated birefringence is induced by this oscillation. By using a properly adjusted polarizer and analyzer, the transmission of trough-going polarized light can be modulated. By simultaneous excitation of two modes, an advanced optical response can be achieved. For the applications presented here, the first shear eigenmode must have exactly three times the frequency of the first longitudinal eigenmode.

© 2008 Optical Society of America

OCIS Codes
(140.3540) Lasers and laser optics : Lasers, Q-switched
(230.4110) Optical devices : Modulators

Original Manuscript: July 30, 2008
Revised Manuscript: November 4, 2008
Manuscript Accepted: November 4, 2008
Published: December 3, 2008

Rok Petkovšek, Ferdinand Bammer, Dieter Schuöcker, and Janez Možina, "Dual-mode single-crystal photoelastic modulator and possible applications," Appl. Opt. 48, C86-C91 (2009)

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