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23 March 2001 Gain saturation effects in BBO parametric amplifier
W. Hogervorst, N. Kondratyuk, A. A. Shagov, V. N. Belyi
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Proceedings Volume 4350, Laser Optics 2000: Solid State Lasers; (2001) https://doi.org/10.1117/12.420958
Event: Laser Optics 2000, 2000, St. Petersburg, Russian Federation
Abstract
In the present work the gain saturation effects in type-I BBO optical parametric amplifier (OPA) pumped by the 3rd harmonic of multi-mode Nd:YAG laser are investigated. The OPA gain was measured as a function of input idler energy at 1064 nm with a constant pump energy at 355 nm and a beam divergence 0,3 mrad. In the 9 mm BBO crystal at pump intensity approximately 68 MW.cm2 and input idler intensity approximately 18 MW.cm2 the efficiency of energy extraction in the saturated gain regime approximately 31% was obtained. The ways to increase the efficiency of energy extraction in the two-crystal OPA configuration are discussed.
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W. Hogervorst, N. Kondratyuk, A. A. Shagov, and V. N. Belyi "Gain saturation effects in BBO parametric amplifier", Proc. SPIE 4350, Laser Optics 2000: Solid State Lasers, (23 March 2001); https://doi.org/10.1117/12.420958
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KEYWORDS
Crystals
Energy efficiency
Optical amplifiers
Nd:YAG lasers
Mirrors
Optical parametric oscillators
Antireflective coatings
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