Share Email Print
cover

Proceedings Paper

Infrared beam control through acousto-magneto-optic interaction in a-Fe2O3
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Rapid control of the parameters of infrared radiation, such as amplitude, phase and the direction of propagation, is important in a number of military and commercial applications. Some examples are radar and lidar beam modulation and steering, optical communications and information processing. The suitability of canted antiferromagnet hematite ((alpha) -Fe2O3) for such applications is discussed. Experimental results of optical transmission in the 1 - 5 micrometers spectral interval, magneto- induced birefringence, acousto-magneto-optic diffraction, and the magnetic field dependencies of diffraction angle and efficiency (at a wavelength of 1.55 micrometers ) are presented in this paper. The combination of magneto-optic properties, which potentially introduce large induced birefringence, and acoustics (periodic modulation of birefringence along the cross-section of the optical beam), demonstrates enhanced efficiency of acousto-optic diffraction. Furthermore, an additional degree of freedom, which is the magnetic field tuning of acoustic velocities, is introduced. Directions for future development are also discussed.

Paper Details

Date Published: 13 July 2000
PDF: 8 pages
Proc. SPIE 4046, Advances in Optical Information Processing IX, (13 July 2000); doi: 10.1117/12.391952
Show Author Affiliations
Aramais A. Avakian, Physical Optics Corp. (United States)
Paul I. Shnitser, Physical Optics Corp. (United States)


Published in SPIE Proceedings Vol. 4046:
Advances in Optical Information Processing IX
Dennis R. Pape, Editor(s)

© SPIE. Terms of Use
Back to Top