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Efficient generation of 200mJ nanosecond pulses at a 100Hz repetition rate from a cryogenic cooled Yb:YAG MOPA system

Efficient generation of 200mJ nanosecond pulses at a 100Hz repetition rate from a cryogenic cooled Yb:YAG MOPA system
Efficient generation of 200mJ nanosecond pulses at a 100Hz repetition rate from a cryogenic cooled Yb:YAG MOPA system
A diode-pumped Master Oscillator Power Amplifier (MOPA) laser system based on cryogenic cooled Yb:YAG has been designed, developed and its output performance characterised. The laser system consists of a fibre oscillator, an active mirror regenerative amplifier and a four pass main amplifier. 2.4 mJ, 10 ns, 100 Hz seed pulses from the fibre oscillator/regenerative amplifier arrangement were amplified up to pulse energies of over 200 mJ by using the four pass main amplifier arrangement. As a further study we have obtained an increased slope efficiency of 40% and an optical-to-optical efficiency of 30% using a pinhole vacuum spatial filter/image relay for laser mode control. With 1.8 mJ input seed pulses, output pulse energies of around 150 mJ were achieved.
high repetition rate, Yb:YAG, Yb:YAG ceramic, cryogenic cooling, diode-pumped, solid-state laser, mopa, regenerative amplifier
0030-4018
2199-2203
Pearce, Stuart
1d0ee7c5-8f72-4783-a034-9b2f67de3531
Yasuhara, R.
cb8026e7-58f0-464c-94e9-b5b9bb312339
Yoshida, A.
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Kawanaka, J.
befe747a-70e7-453e-be2d-cb6ff6a6c39a
Kawashima, T.
2f7dfa72-9b3e-4b3d-8dc7-12cdfad05cfd
Kan, H.
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Pearce, Stuart
1d0ee7c5-8f72-4783-a034-9b2f67de3531
Yasuhara, R.
cb8026e7-58f0-464c-94e9-b5b9bb312339
Yoshida, A.
d95bdbd9-162d-431c-8388-cead4dbbd99d
Kawanaka, J.
befe747a-70e7-453e-be2d-cb6ff6a6c39a
Kawashima, T.
2f7dfa72-9b3e-4b3d-8dc7-12cdfad05cfd
Kan, H.
69ea2c7b-1e71-400e-8651-212ba966d436

Pearce, Stuart, Yasuhara, R., Yoshida, A., Kawanaka, J., Kawashima, T. and Kan, H. (2009) Efficient generation of 200mJ nanosecond pulses at a 100Hz repetition rate from a cryogenic cooled Yb:YAG MOPA system. Optics Communications, 282 (11), 2199-2203. (doi:10.1016/j.optcom.2009.02.051).

Record type: Article

Abstract

A diode-pumped Master Oscillator Power Amplifier (MOPA) laser system based on cryogenic cooled Yb:YAG has been designed, developed and its output performance characterised. The laser system consists of a fibre oscillator, an active mirror regenerative amplifier and a four pass main amplifier. 2.4 mJ, 10 ns, 100 Hz seed pulses from the fibre oscillator/regenerative amplifier arrangement were amplified up to pulse energies of over 200 mJ by using the four pass main amplifier arrangement. As a further study we have obtained an increased slope efficiency of 40% and an optical-to-optical efficiency of 30% using a pinhole vacuum spatial filter/image relay for laser mode control. With 1.8 mJ input seed pulses, output pulse energies of around 150 mJ were achieved.

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More information

Published date: 1 June 2009
Keywords: high repetition rate, Yb:YAG, Yb:YAG ceramic, cryogenic cooling, diode-pumped, solid-state laser, mopa, regenerative amplifier
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 350321
URI: https://eprints.soton.ac.uk/id/eprint/350321
ISSN: 0030-4018
PURE UUID: d0ca2a0e-4077-46be-9369-11e31d77f809

Catalogue record

Date deposited: 25 Mar 2013 13:14
Last modified: 16 Jul 2019 21:39

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