Apparatus and method for increasing the efficiency of an acousto

Details Apparatus and method for increasing the efficiency of an acousto Apparatus and method for increasing the efficiency of an acousto

1988-05-13

1990-07-10

LaRoche, Eugene R.

G02F 101

Patent

active

049403168

ABSTRACT:
An acousto optic diffractive device including a transducer for launching acoustic energy into a crystal so as to maximize overlap of the acoustic energy within the crystal, and a light source for illuminating the crystal so that the light is diffracted by the overlapping acoustic energy. By operating an acousto optic diffractive device in resonance, the amount of power required to drive the acousto optic diffractive device is significantly lowered, without adversely affecting the wavelength pass band of the device.

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Bolef et al., "Some Continuous-Wave Techniques for Measurement of Velocity and Attenuation of Ultrasonic Waves Between 1 and 1000 Mc," pp. 19-26, Jul., 1963.
D. I. Bolef et al., "Measurement of Elastic Constants of RbBr, RbI, CsBr, and CsI by an Ultrasonic cw Resonance Technique," J. App. Phys., vol. 31, No. 6, pp. 1010-1017, Jun. 1960.
I. C. Chang, "Tunable Acousto-Optic Filters: An Overview," Optical Engineering, vol. 16, No. 5, pp. 455-460, Sep./Oct. 1977.
K. B. Steinbruegge, "Automated Acousto-Optic Tunable Filter (AOTF) Infrared Analyzer," Proc. of SPIE, vol. 268, pp. 160-166, Feb., 1981.

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