LASER PULSEWIDTH COMPRESSION BY COHERENT WAVE MIXING IN SILICON

We propose a novel method to compress laser pulsewidths by coherent wa ve mixing in silicon. According to our calculation, a compressed and a mplified signal beam which pulsewidth approaches 70% of the input can be obtained with a nanosecond to picosecond laser pulse within the dam age threshold of the material. The influence of parameters such as pum p beam intensity and wave mixing angle on the compressed pulsewidth of the signal beam is discussed.