Generation of 12 fs deep-ultraviolet pulses by four-wave mixing through filamentation in neon gas
Generation of 12 fs deep-ultraviolet pulses by four-wave mixing through filamentation in neon gas
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DOI：
10.1364/ol.32.002481
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发表时间：
2007-09-01
期刊：
影响因子：
3.6
通讯作者：
Suzuki, Toshinori
中科院分区：
文献类型：
--
作者：
Fuji, Takao;Horio, Takuya;Suzuki, Toshinori
利用氖气体中的四波混频效应产生了深紫外飞秒脉冲。将25 fs钛宝石放大器输出的基波（omega）和二次谐波（2 omega）脉冲聚焦到氖中，通过类似于15 cm灯丝的4波混频过程（2 omega+2 omega->omega）产生中心波长为260 nm的20 μ J脉冲。此外，可能通过级联过程产生了200 nm处能量为2 μ J的脉冲，3 Ω +2 Ω-Ω-> 4 Ω。260 nm的脉冲被压缩的光栅为基础的压缩器和其特征在于由色散自由瞬态光栅频率分辨光学选通。估计的脉冲宽度为12 fs。(c)2007年，美国光学学会。
Generation of deep-ultraviolet femtosecond pulses by four-wave mixing through filamentation in neon gas was demonstrated. Fundamental (omega) and second-harmonic (2 omega) pulses of 25 fs Ti:sapphire amplifier output were focused into neon gas, and 20 mu J pulses with the center wavelength of 260 nm were produced by a four-wave mixing process, 2 omega+2 omega-omega ->omega through an similar to 15 cm filament. Additionally, pulses with an energy of 2 mu J at 200 nm were generated, probably by a cascaded process, 3 omega+2 omega-omega -> 4 omega. The 260 nm pulses were compressed by a grating-based compressor and characterized by a dispersion-free transient grating frequency-resolved optical gating. The estimated pulse width was 12 fs. (c) 2007 Optical Society of America.