论文信息 - Design of high gain OPCPA for multiterawatt and petawatt class systems on large aperture LBO crystals

Design of high gain OPCPA for multiterawatt and petawatt class systems on large aperture LBO crystals

Comparative analysis of optimal scheme of non-collinear optical chirped-pulse parametric amplification of fewcycle femtosecond pulses from Ti:Sa laser in LBO and DKDP crystals pumped by picosecond pulses up to petawatt level is presented. A flexible code, based on the extended model of parametric amplification, which takes into account the large set of effects such as saturation, phase self-modulation, influence of beam divergence, thermal effects, and amplification of spontaneous emission was realized. A way of creating nearly 1 PW system based on LBO crystals with transform-limited pulse duration about 9 fs has been demonstrated. Comparison between DKDP and LBO crystal showed that the latter is much better for OPCPA petawatt system design than DKDP.

[1] G. New,et al. Modelling of angular effects in nonlinear optical processes , 2006 .

[2] Hiroyuki Daido,et al. High-spatiotemporal-quality petawatt-class laser system. , 2010, Applied optics.

[3] Yiting Fei,et al. Energy and average power scalable optical parametric chirped-pulse amplification in yttrium calcium oxyborate. , 2006, Optics letters.

[4] Andy J. Bayramian,et al. High-average-power femto-petawatt laser pumped by the Mercury laser facility , 2008 .

[5] R. Dabu. Very broad gain bandwidth parametric amplification in nonlinear crystals at critical wavelength degeneracy. , 2010, Optics express.

[6] Todd Ditmire,et al. Demonstration of a 1.1 petawatt laser based on a hybrid optical parametric chirped pulse amplification/mixed Nd:glass amplifier. , 2010, Applied optics.

[7] V. V. Petrov,et al. Hybrid high power femtosecond laser system , 2006, International Conference on Lasers, Applications, and Technologies.