Abstract

A device has been constructed that combines optical isolation and amplitude noise reduction by the use of a servo controlled acoustooptc intensity modulator. The isolation can, in principle, be perfect while the noise reduction can be significant up to about 100 kHz and as large as 80 dB at low frequency. This performance is accomplished by applying negative feedback around an acoustooptc modulator, servoing the intensity of the Bragg diffracted beam to a constant value.

© 1979 Optical Society of America

Temporal response of the acoustooptic modulator in the high scattering efficiency regime

Richard V. Johnson
Appl. Opt. 18(6) 903-907 (1979)

Acoustooptic spectrum analysis: a high performance hybrid technique

T. R. Bader
Appl. Opt. 18(10) 1668-1672 (1979)

Surface wave delay line acoustooptic devices for signal processing

N. J. Berg, J. N. Lee, M. W. Casseday, and B. J. Udelson
Appl. Opt. 18(16) 2767-2774 (1979)

Acoustooptic traveling-wave transcription signal recording based on two-beam interference

Akira Ishii and Manabu Yamamoto
Appl. Opt. 18(3) 335-342 (1979)

Isolation and frequency conversion properties of acoustooptic modulators

B. Furch, A. L. Scholtz, and W. R. Leeb
Appl. Opt. 21(13) 2344-2347 (1982)