Cryogenic cooling for high power laser amplifiers

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Title:: Cryogenic cooling for high power laser amplifiers
Authors:: Perin J.P.
Millet F.
Divoky M.
Rus B.
Subject Terms:: Physics
QC1-999
Source:: EPJ Web of Conferences, Vol 59, p 08005 (2013)
Publisher:: EDP Sciences, 2013.
Publication Year:: 2013
Collection:: LCC:Physics
Document Type:: article
File Description:: electronic resource
Language:: English
ISSN:: 2100-014X
82216401
Relation:: https://doaj.org/toc/2100-014X
DOI:: 10.1051/epjconf/20135908005
Access URL:: https://doaj.org/article/151938ae00e64fc7a56f822164019c63 Link opens in a new window
Accession Number:: edsdoj.151938ae00e64fc7a56f822164019c63
: Academic Journal

Full Text

Using DPSSL (Diode Pumped Solid State Lasers) as pumping technology, PW-class lasers with enhanced repetition rates are developed. Each of the Yb YAG amplifiers will be diode-pumped at a wavelength of 940 nm. This is a prerequisite for achieving high repetition rates (light amplification duration 1 millisecond and repetition rate 10 Hz). The efficiency of DPSSL is inversely proportional to the temperature, for this reason the slab amplifier have to be cooled at a temperature in the range of 100 K–170 K with a heat flux of 1 MW*m−2. This paper describes the thermo-mechanical analysis for the design of the amplification laser head, presents a preliminary proposal for the required cryogenic cooling system and finally outlines the gain of cryogenic operation for the efficiency of high pulsed laser.

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