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Proceedings Paper

Phased multichannel laser systems with high spatial emission brightness
Author(s): A. V. Fedin; T. T. Basiev; A. V. Gavrilov; S. N. Smetanin; A. S. Boreysho; V. F. Lebedev
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Paper Abstract

The phase-locked multichannel Nd:YAG laser systems with the long- and short-range coupling via the holographic gain gratings in the active elements are developed. The phase locking of various lamp- and diodepumped loop Nd:YAG lasers with an interference contrast of the laser channels of up to 0.87 and a singlemode lasing efficiency of up to 20% is experimentally demonstrated. The experimental results for the twoand three-channel laser systems are generalized on multichannel laser systems using the numerical simulation. It is demonstrated that the maximum number of the short-range-coupled laser channels can be increased owing to the leveling of the parameters of laser channels to a value that is greater than that the maximum number of the channels in the presence of the long-range coupling, which is limited by the damage threshold of the active element of the interchannel coupling. Use of the multi-loop configuration of the laser resonator allows compensating not only phase distortions but also a gradient of gain in the diode side-pumped active elements.

Paper Details

Date Published: 16 November 2010
PDF: 15 pages
Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 775117 (16 November 2010); doi: 10.1117/12.881202
Show Author Affiliations
A. V. Fedin, Laser Systems Ltd. (Russian Federation)
V. A. Kovrov State Technological Academy (Russian Federation)
T. T. Basiev, A. M. Prokhorov General Physics Institute (Russian Federation)
A. V. Gavrilov, V. A. Kovrov State Technological Academy (Russian Federation)
S. N. Smetanin, Laser Systems Ltd. (Russian Federation)
V. A. Kovrov State Technological Academy (Russian Federation)
A. S. Boreysho, Laser Systems Ltd. (Russian Federation)
V. F. Lebedev, Laser Systems Ltd. (Russian Federation)


Published in SPIE Proceedings Vol. 7751:
XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Tanja Dreischuh; Petar A. Atanasov; Nikola V. Sabotinov, Editor(s)

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