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Highly efficient cryogenically cooled Yb: YAG laser

Highly efficient cryogenically cooled Yb: YAG laser
Highly efficient cryogenically cooled Yb: YAG laser
A MOPA laser system for high pulse energy and high average power has been developed by using a cryogenic Yb:YAG. In the regenerative amplifier with our original TRAM architecture, the high pulse energies of 6.5 and 1.5 mJ were obtained at the repetition rate of 200 Hz and 1 kHz, respectively. An optical efficiency was as high as ?o-o = 9.3% with an excellent beam quality of M 2 < 1.1, which ensured that a cryogenic Yb:YAG TRAM had a high thermal strength. The following four pass power amplifier with a cryogenic Yb:YAG rod showed 140 mJ at 100 Hz. Both a high optical efficiency of ?o-o = 30% and a high slope efficiency of ?s = 44% showed that an efficient laser operation could be realized for a power amplification with both a high pulse energy and a high average power by using a cryogenic Yb:YAG.
1054-660X
1079-1084
Kawanaka, J.
befe747a-70e7-453e-be2d-cb6ff6a6c39a
Takeuchi, Y.
4aea60ab-7aa5-47ae-80eb-baf87fe55a3b
Yoshida, A.
d95bdbd9-162d-431c-8388-cead4dbbd99d
Pearce, Stuart
1d0ee7c5-8f72-4783-a034-9b2f67de3531
Yasuhara, R.
cb8026e7-58f0-464c-94e9-b5b9bb312339
Kawashima, T.
2f7dfa72-9b3e-4b3d-8dc7-12cdfad05cfd
Kan, H.
69ea2c7b-1e71-400e-8651-212ba966d436
Kawanaka, J.
befe747a-70e7-453e-be2d-cb6ff6a6c39a
Takeuchi, Y.
4aea60ab-7aa5-47ae-80eb-baf87fe55a3b
Yoshida, A.
d95bdbd9-162d-431c-8388-cead4dbbd99d
Pearce, Stuart
1d0ee7c5-8f72-4783-a034-9b2f67de3531
Yasuhara, R.
cb8026e7-58f0-464c-94e9-b5b9bb312339
Kawashima, T.
2f7dfa72-9b3e-4b3d-8dc7-12cdfad05cfd
Kan, H.
69ea2c7b-1e71-400e-8651-212ba966d436

Kawanaka, J., Takeuchi, Y., Yoshida, A., Pearce, Stuart, Yasuhara, R., Kawashima, T. and Kan, H. (2010) Highly efficient cryogenically cooled Yb: YAG laser Laser Physics, 20, (5), pp. 1079-1084. (doi:10.1134/S1054660X10090252).

Record type: Article

Abstract

A MOPA laser system for high pulse energy and high average power has been developed by using a cryogenic Yb:YAG. In the regenerative amplifier with our original TRAM architecture, the high pulse energies of 6.5 and 1.5 mJ were obtained at the repetition rate of 200 Hz and 1 kHz, respectively. An optical efficiency was as high as ?o-o = 9.3% with an excellent beam quality of M 2 < 1.1, which ensured that a cryogenic Yb:YAG TRAM had a high thermal strength. The following four pass power amplifier with a cryogenic Yb:YAG rod showed 140 mJ at 100 Hz. Both a high optical efficiency of ?o-o = 30% and a high slope efficiency of ?s = 44% showed that an efficient laser operation could be realized for a power amplification with both a high pulse energy and a high average power by using a cryogenic Yb:YAG.

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More information

e-pub ahead of print date: 2 April 2010
Published date: May 2010
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 350322
URI: http://eprints.soton.ac.uk/id/eprint/350322
ISSN: 1054-660X
PURE UUID: 41631632-2c43-4d5e-a077-19510d478638

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Date deposited: 25 Mar 2013 13:19
Last modified: 18 Jul 2017 04:35

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Contributors

Author: J. Kawanaka
Author: Y. Takeuchi
Author: A. Yoshida
Author: Stuart Pearce
Author: R. Yasuhara
Author: T. Kawashima
Author: H. Kan

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