An All-Solid-State Chirped Source for Coherent Optical Radar
STANFORD UNIV CA DEPT OF APPLIED PHYSICS
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A low-noise, high-power, single-frequency, solid-state laser harmonically converted to the green is required to pump a single-frequency, singly-resonant, chirped, optical parametric oscillator. As work toward this new frequency agile source we have built and injection locked an 18 watt NdYAG slave laser with a 40 mW master laser to produce single frequency operation, generated 6.5 watts of 532 nm radiation at 36 efficiency by resonant second harmonic generation, and measured spectral and spatial mode characteristics of this laser. Toward an all-solid-state version of this laser we have designed a diode-laser-pumped NdYAG laser. All subsystems of this laser have been built and tested and the final construction of the laser is currently underway. In addition, we have built both a pulsed singly resonant optical parametric oscillator, and a low threshold cw doubly resonant optical parametric oscillator that operated at 80 conversion efficiency in a single axial mode.
- Active and Passive Radar Detection and Equipment