Active-mirror-laser-amplifier thermal management with tunable helium pressure at cryogenic temperatures | Zendy

Antonio Lucianetti | Zendy; D. Albach | Zendy; Jean-Christophe Chanteloup | Zendy

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Active-mirror-laser-amplifier thermal management with tunable helium pressure at cryogenic temperatures

Author(s) -

Antonio Lucianetti,

D. Albach,

Jean-Christophe Chanteloup

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.012766

Subject(s) - materials science , helium , optics , amplifier , laser , gas laser , cryogenics , optoelectronics , atomic physics , physics , thermodynamics , cmos

We illustrate the benefits of a thin, low pressure helium cell for efficient and safe heat removal in cryogenically-cooled active mirror laser amplifiers operating in the [100 J-1 kJ]/[1-10 Hz] range. A homogeneous gain medium temperature distribution averaging 160 K is obtained with a sub-mm helium-filled gap between the gain medium and a copper plate at 77 K. A significant degree of flexibility for tuning the temperature in the amplifier can be achieved by varying the pressure of the helium gas in the 10(2) to 10(5) Pa range.

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