Abstract
A quenching cavity is constructed for pulse shortening in a conventional grazing-incidence dye laser. The quenching beam is further introduced into two succeeding preamplifiers to suppress amplification of spontaneous emission from the oscillator. The pulse width (14 ns) obtained without a quenching cavity is reduced to 1.8 ns by quenching the oscillating beam. In this system, the pulse width can be switched instantly by interrupting the beam path of the quenching cavity. The laser system is applied to generation of multicolor laser emission based on the two-color stimulated Raman effect. The efficiency is substantially improved by increasing the peak power, due to the nonlinear behavior of this effect.
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