LIGHT PULSE AMPLIFYING DEVICE, CHIRP PULSE AMPLIFYING DEVICE, AND PARAMETRIC CHIRP PULSE AMPLIFYING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a small-sized amplifier for ultrashort pulses of high energy. SOLUTION: This light pulse amplifying device has an excitation source 100 which generates an exciting light pulse with specific continuation, a signal source 130 which generates a signal light pulse, an optical combining means 160 which combines both the light pulses together to generate a combined light pulse, a parametric amplifier 170 having a quasi-phase matching crystal which photodetects the combined light pulse and amplifies the signal pulse with the energy of the exciting light pulse, and a compressor 180 which compresses the amplified signal pulse. The parametric amplifier 170 performs parametric chirp pulse amplification and the powerful amplification of the signal light pulse can be performed even with an exciting light pulse with low peak power, so the ultrashort light pulse with high energy is outputted from the compressor 180.