A tunable dual frequency dye laser

The tunable oscillator part of a pulsed dye laser was modified for emission of two wavelengths. The dye laser, including the oscillator followed by three amplifiers, is pumped by a dual frequency Nd-YAG laser. Tuning along with spectral width are controlled by a holographic network which is connected with a high power telescope. The modified two-wavelength dye laser allows absorption lidar techniques for remote sensing of the atmosphere. Rapid line switching is achieved by electro-optical commutation. are presented.