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Proceedings Paper

Ti:sapphire regenerative amplifier
Author(s): Xun Hou; ShuangChen Ruan; Shuicai Wang; Jianjun Yang; Yanling Sun; Guoge Du; Shan Feng
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Paper Abstract

The design and performance of a stable Ti:sapphire regenerative amplifier. 7 mJ (800 nm) per pulse at the repetition rate 10 Hz, has been described. The resonator consists of one concave mirror (R equals 4000 mm) and one plane mirror, spaced at a distance of 1.76 m. The two mirrors are coated for high reflection centered at 800 nm. Two Pockel cells, one broadband waveplate and polarizer are used to switch a pulse into and out of the resonator. The Ti:sapphire crystal rod is 6X6X14 mm with an absorption coefficient of 2.6 cm-1 at 490 nm and both sides is cut at Brewster's angle. The pump source is frequency double Nd:YAG laser. For regenerative amplifier, the pump energy which we usually use is 64 mJ per pulse. The seed pulse is from a self-mode-locked Ti:sapphire laser that provides 400 mW of outpower with pulse duration about 80 - 100 fs. After stretching the pulse to about 200 - 300 ps by using the grating stretcher, we inject the pulse into the regenerative amplifier and obtain 7 mJ output energy in single pulse, a net gain of up to 106. This laser system is a pre-amplifier for high energy amplifier.

Paper Details

Date Published: 28 May 1997
PDF: 5 pages
Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997); doi: 10.1117/12.273459
Show Author Affiliations
Xun Hou, Xian Institute of Optics and Precision Mechanics (China)
ShuangChen Ruan, Xian Institute of Optics and Precision Mechanics (China)
Shuicai Wang, Xian Institute of Optics and Precision Mechanics (China)
Jianjun Yang, Xian Institute of Optics and Precision Mechanics (China)
Yanling Sun, Xian Institute of Optics and Precision Mechanics (China)
Guoge Du, Xian Institute of Optics and Precision Mechanics (China)
Shan Feng, Xian Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 2869:
22nd International Congress on High-Speed Photography and Photonics
Dennis L. Paisley; ALan M. Frank, Editor(s)

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