J. Phys. IV France 11 (2001) Pr2-597-Pr2-600
Prospect for 100TW/90fs X-ray driver using optical parametric chirped pulse amplifiersX.D. Yang, Z.Z. Xu, Z.Q. Zhang, J.H. Peng, J.A. Wang, Y.X. Leng and S.Q. Jin
Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
The optical parametric chirped pulse amplification (OPCPA) technique is promising for constructing a 100-TW/90-fs laser systern. This laser systern consists of a diode-pumped Nd : phosphate oscillator, two LBO preamplifiers and a final power KDP amplifier. A noncollinear BBO-1 optical parametric amplifier pumped by a Q-switched and frequency-doubled Nd:YAG laser has been demonstrated. The temporally-stretched chirped signal laser pulses with a bandwidth of 36nm(FWHM) are amplified without limitation in bandwidth and distortion in the spectrum. The gain bandwidth is very sensitive to the pump-signal angle. Variation of this angle of [MATH] can significantly reduce the amplified bandwidth and results in a significant distortion of the amplified spectrum.
© EDP Sciences 2001