Acousto-optical light diffraction in thin films
- 1 September 1973
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 44 (9), 3928-3933
- https://doi.org/10.1063/1.1662874
Abstract
The diffraction of optical guided waves in thin films through an acousto‐optic effect is treated. The diffraction of the bounded optical waves in thin films is a rather complicated phenomenon as compared with that of the free waves in bulk media. An expression for the diffraction efficiency has been derived using coupled‐wave equations. Acousto‐optical figure of merit and the mode coupling factor applicable to the diffraction in thin films are defined. The TE0 and TM0 waves in an As2S3 film deposited onto a LiNbO3 substrate were diffracted by Rayleigh waves with 93 and 72% efficiency at electrical input powers of 150 and 50 mW, respectively. The present experiment revealed that approximately 5% of the total acoustic power penetrated into the film and took part in the diffraction.Keywords
This publication has 21 references indexed in Scilit:
- Switching and modulation of light in magneto-optic waveguides of garnet filmsApplied Physics Letters, 1972
- Laser-Induced Refractive-Index Change in As–S–Ge GlassesApplied Physics Letters, 1972
- Optical-Waveguide Mode-Conversion ExperimentsApplied Physics Letters, 1972
- Light Waves in Thin Films and Integrated OpticsApplied Optics, 1971
- Light Diffraction by an Acoustic Surface Wave in Fused QuartzJournal of Applied Physics, 1971
- Theory of Prism–Film Coupler and Thin-Film Light GuidesJournal of the Optical Society of America, 1970
- CaMoO4 ELECTRONICALLY TUNABLE OPTICAL FILTERApplied Physics Letters, 1970
- PIEZOELECTRIC LEAKY SURFACE WAVE IN LiNbO3Applied Physics Letters, 1970
- Integrated Optics: An IntroductionBell System Technical Journal, 1969
- Refractive Index of Arsenic TrisulfideJournal of the Optical Society of America, 1958