Optical parametric chirped-pulse-amplification contrast enhancement by regenerative pump spectral filtering
Abbreviated Journal Title
HIGH-ENERGY; LASER; GENERATION; AMPLIFIER; NOISE; Optics
We demonstrate an approach to fundamentally improve the contrast of optical parametric chirped-pulse amplifiers (OPCPA). The instantaneous parametric gain couples the temporal variations of the pump-pulse intensity to spectral variations of the intensity of the stretched signal pulse being amplified, which significantly degrade the temporal contrast of the amplified pulse after recompression. Simple and efficient pump-intensity noise reduction in an OPCPA system using a volume Bragg grating in a regenerative amplifier demonstrates contrast improvements up to 30 dB. (C) 2007 Optical Society of America.
"Optical parametric chirped-pulse-amplification contrast enhancement by regenerative pump spectral filtering" (2007). Faculty Bibliography 2000s. 7065.