论文信息 - Plasma channel formation and micromodification of KDP crystal by tightly focused Cr:forsterite femtosecond laser radiation

Plasma channel formation and micromodification of KDP crystal by tightly focused Cr:forsterite femtosecond laser radiation

Experiments on single pulse plasma channel formation in non-linear KDP crystal by tightly focused (NA = 0.47) fundamental and doubled Cr:forsterite laser radiation with energy of 0.1 ÷ 10 μJ and 100 fs pulse duration were carried out. We propose the simple model of non-linear absorption of femtosecond laser radiation in plasma channel. This model allows estimate laser intensity in the channel and plasma parameters.

[1] P. Corkum,et al. Stress in femtosecond-laser-written waveguides in fused silica. , 2004, Optics letters.

[2] S Kawata,et al. Use of two-photon absorption in a photorefractive crystal for three-dimensional optical memory. , 1998, Optics letters.

[3] R. Vallée,et al. Optical breakdown versus filamentation in fused silica by use of femtosecond infrared laser pulses. , 2003, Optics letters.

[4] S Tzortzakis,et al. Self-guided propagation of ultrashort IR laser pulses in fused silica. , 2001, Physical review letters.

[5] Qihuang Gong,et al. Formation of diversiform microstructures in wide-bandgap materials by tight-focusing femtosecond laser pulses , 2002 .