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A new measurement of stimulated Brillouin scattering phase conjugation fidelity for high pump energies

Published online by Cambridge University Press:  22 April 2009

Y.L. Wang ,
Z.W. Lu ,
W.M. He ,
Z.X. Zheng  and
Y.H. Zhao
Y.L. Wang
Affiliation:
Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
Z.W. Lu*
Affiliation:
Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
W.M. He
Affiliation:
Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
Z.X. Zheng
Affiliation:
Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
Y.H. Zhao
Affiliation:
Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
*
Address correspondence and reprint requests to: Zhiwei Lu, Institute of Opto-Electronics, Harbin Institute of Technology, P. O. Box 3031. Harbin 150080, China. E-mail: zw_lu@sohu.com
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Abstract

In order to measure the phase conjugation-fidelity of stimulated Brillouin scattering with high pump energy more accurately and conveniently, a new measurement is proposed. According to the definition of the fidelity with optical field correlated integral, the method of recording the far-field by array camera is analyzed theoretically. By the method, an experiment for high energy stimulated Brillouin scattering is arranged, and the maximum energy of 3.42 J is achieved in a single-cell stimulated Brillouin scattering generator. For small pump pulse, the fidelity maintains a high value of more than 0.9. However, the reflectivity fluctuation is significant when the pump energy is larger than 1.5 J. As a result, the fidelity decreases gradually to 0.5 at the pump energy of 3.42 J. The reflectivity shows the same character of great fluctuation as the fidelity at high pump energy.

Keywords

Beam combinationPhase conjugationStimulated Brillouin scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 27 , Issue 2 , June 2009 , pp. 297 - 302
Copyright
Copyright © Cambridge University Press 2009

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