POWER SPECTRUM AND SIGNAL-NOISE RATIO OF CHIRPED PULSE

The development of chirped -pulse amplification (CPA) technique requires to optimize CPA for the production of high power ultrashort light pulses with low pedestal. In an ideal CPA system, compressed pulse will be determined solely by the power spectrum of the amplified pulse. The temporal pulse shape I (t) can be given by the power spectrum I (ω). It's shown that I (ω) of Gaussian spectral lineshape without modulation may produce clean, high contrast pulses.