Acousto-optic modulators for use in long-distance laser beam communication systems

Leonid Davidovich

doi:10.1117/12.151133

13 August 1993 Acousto-optic modulators for use in long-distance laser beam communication systems

Leonid Davidovich

Proceedings Volume 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine; (1993) https://doi.org/10.1117/12.151133
Event: 8th Meeting in Israel on Optical Engineering, 1992, Tel Aviv, Israel

Abstract

In acousto-optics there exists a trade off between the maximum modulation frequency and the maximum incident beam power that can be modulated. A projected increase in power- bandwidth product will lead to a significant increase in transmission distance for long distance atmospheric optical communications. This paper describes our investigation of certain anomalies of the acousto-optic interaction in the region of theoretical upper limit of modulation frequency and of the beam power that can be modulated. The current investigation has shown that under certain conditions the efficiency of AOM performance and its bandwidth could be considerably increased. We further investigated unique properties of multi-order Bragg diffraction structure which can be observed at high modulation frequencies. This paper discusses work in progress which could lead to the development of acousto-optic modulators capable of modulating up to one half watt of optical power at frequencies of up to 100 MHz.

Citation Download Citation

Leonid Davidovich "Acousto-optic modulators for use in long-distance laser beam communication systems", Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993); https://doi.org/10.1117/12.151133

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KEYWORDS

Modulation

Bragg cells

Acousto-optics

Diffraction

Adaptive optics

Modulators

Modulation transfer functions

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