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Proceedings Paper

Passively Q-switched high-energy all-solid-state holographic Nd:YAG laser with a multiloop cavity
Author(s): V. F. Lebedev; A. P. Pogoda; A. S. Boreysho; S. N. Smetanin; A. V. Fedin
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Paper Abstract

A high-energy, high-beam-quality laser based on a single Nd:YAG rod with laser diode side-pumping and multiloop self-adaptive reciprocal cavity is presented. The optimized laser cavity geometry allowed to change the laser oscillation from single 200-ns self-Q-switched pulse followed by low-intensity free-running lasing to repetitive high-intensive pulses by periodically writing and erasing holographic gain gratings in the active Nd:YAG medium. The intensified self-Q-switching pulse train oscillation was realized by the interaction with a diffusely reflecting target placed in the focal plane of a lens at the laser output. Effects of shortening of the repetitive laser pulses down to 70-ns duration, stabilization of the pulse repetition period (~ 5 μs), and mode-locking temporal modulation of the pulses were observed. The use of a passive F2–:LiF Q-switch resulted in stable giant pulse train oscillation with total output energy of up to 0.43 J, individual pulse energy of 50 mJ, and its peak power of 4 MW at the individual pulse duration of 12 ns.

Paper Details

Date Published: 3 February 2015
PDF: 5 pages
Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 925509 (3 February 2015); doi: 10.1117/12.2070421
Show Author Affiliations
V. F. Lebedev, Laser Systems LTD (Russian Federation)
Baltic State Technical Univ. (Russian Federation)
A. P. Pogoda, Laser Systems LTD (Russian Federation)
Baltic State Technical Univ. (Russian Federation)
A. S. Boreysho, Laser Systems LTD (Russian Federation)
Baltic State Technical Univ. (Russian Federation)
S. N. Smetanin, V. A. Kovrov State Technological Academy (Russian Federation)
A. V. Fedin, V. A. Kovrov State Technological Academy (Russian Federation)


Published in SPIE Proceedings Vol. 9255:
XX International Symposium on High-Power Laser Systems and Applications 2014
Chun Tang; Shu Chen; Xiaolin Tang, Editor(s)

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