Rotating off-centered lens in SBS phase conjugation mirror for high- repetition-rate operation

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A new method using a rotating off-centered lens is proposed to reduce the heat accumulation at the focal spot of a stimulated Brillouin scattering phase conjugation mirror at high-repetition-rate operation. Theoretical simulation of the beam intensity pattern at the focal point indicates there is less coma-aberration using a rotating off-centered focusing lens than with a rotating wedge and a conventional lens. The resultant SBS output parameters using this new method are substantially improved comparable to those of a non-rotating conventional method for high-repetition-rate operation while the former operates quite well for higher power and the latter operates only for lower input power. High reflected energy and a good beam pattern are demonstrated using the proposed method in the present experimental conditions of 50 mJ at 1 kHz. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Publisher
OPTICAL SOC AMER
Issue Date
2019-04
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.27, no.7, pp.9895 - 9905

ISSN
1094-4087
DOI
10.1364/OE.27.009895
URI
http://hdl.handle.net/10203/262219
Appears in Collection
PH-Journal Papers(저널논문)
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