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Proceedings Paper

Generation of ultrashort mid-infrared pulses by super continuum seeded OPA in a MgO: LiNbO3 crystal
Author(s): Ying Deng; Qi-hua Zhu; Xiao-ming Zeng; Ying Zhang; Xiao Wang; Feng-rui Wang; Xiao-jun Huang; Xu-dong Xie; Yan-lei Zuo
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Paper Abstract

A type I phase matching MgO:LiNbO3 optical parametric amplification (OPA) system were demonstrated. The OPA system was synchronously seeded with a super continuum and pumped by a laser pulse of 1Hz, 55fs, 3.5mJ, centered at 812nm. The super continuum was got by a sapphire plate and the MgO:LiNbO3 crystal which was 30mmx30mmx15mm in size. In order to avoid the three waves' temporal walk-off, pump wavelength and seeded signal wavelength were tuned simultaneously in simulation, and the result was that it can't be avoided in the collinear phase matching OPA. For the purpose of compensating the group velocity's mismatching, the non-collinear phase matching was adopted, then the non-collinear angles and the best amplified signal wavelengths which changing with the pump wavelengths were also optimized in numerical simulation for the non-collinear phase matching OPA. As a result, pulse energy of as much as 126uJ was achieved at wavelengths ranging from 3.2μm to 4.3μm.

Paper Details

Date Published: 17 January 2008
PDF: 9 pages
Proc. SPIE 6835, Infrared Materials, Devices, and Applications, 68350M (17 January 2008); doi: 10.1117/12.757558
Show Author Affiliations
Ying Deng, Research Ctr. of Laser Fusion (China)
Qi-hua Zhu, Research Ctr. of Laser Fusion (China)
Xiao-ming Zeng, Research Ctr. of Laser Fusion (China)
Ying Zhang, Research Ctr. of Laser Fusion (China)
Xiao Wang, Research Ctr. of Laser Fusion (China)
Feng-rui Wang, Research Ctr. of Laser Fusion (China)
Xiao-jun Huang, Research Ctr. of Laser Fusion (China)
Xu-dong Xie, Research Ctr. of Laser Fusion (China)
Yan-lei Zuo, Research Ctr. of Laser Fusion (China)

Published in SPIE Proceedings Vol. 6835:
Infrared Materials, Devices, and Applications
Yi Cai; Haimei Gong; Jean-Pierre Chatard, Editor(s)

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