Very broad gain bandwidth parametric amplification in nonlinear crystals at critical wavelength degeneracy

被引：29
作者：
Dabu, R. [1 ]
机构：
[1] Natl Inst Laser Plasma & Radiat Phys, Bucharest 077125, Romania
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 11期
关键词：
CHIRPED-PULSE AMPLIFICATION; FEW-CYCLE PULSES; GENERATION; LASER; AMPLIFIERS; TERAWATT; FS;
D O I：
10.1364/OE.18.011689
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Gain spectra were calculated at critical wavelength degeneracy (CWD) in a collinear phase-matching geometry optical parametric amplification (OPA) process. The frequency bandwidth available through CWD-OPA is broader compared to the gain bandwidth obtained by the non-collinear OPA geometry. A solution for very broad bandwidth chirped pulse amplification based on partially deuterated DKDP (P-DKDP) crystals, pumped by pulsed green lasers, is proposed. 1.38 x 10(14) Hz frequency bandwidth and peak intensity gain G approximate to 62 were calculated in a 5-mm long 58% deuterated DKDP crystal, pumped by 527-nm wavelength at 64-GW/cm(2) intensity. Parametric amplification at CWD in few-mm thin P-DKDP crystals, pumped by picosecond pulses of nearly 100-GW/cm(2) intensity, possesses a true potential for generating high energy laser pulses compressible to one-cycle duration. (C) 2010 Optical Society of America
引用
收藏
页码：11689 / 11699
页数：11
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