Optical Parametric Chirped Pulse Amplification at Critical Wavelength Degeneracy - a proposed solution for 100-PW Femtosecond Lasers Development

At signal critical wavelength, super-broad gain bandwidths can be obtained in crystals pumped at degeneracy. Partially deuterated KDP crystals, pumped by green lasers, can amplify ~1.1-μm central wavelength, sub-10 fs laser pulses, at kJ-energy level.