Two Micron Agile Waveform Laser Transmitter for Multi-functional Remote Sensing and Target Designation

Period of Performance: 03/19/1998 - 03/19/2000

$750K

Phase 2 SBIR

Recipient Firm

Coherent Technologies, Inc.
135 S. Taylor Avenue,
Louisville, CO 80027
Principal Investigator

Research Topics

Abstract

Improved laser transmitters are needed for a wide variety of remote sensing and targeting applications, including hard target recognition (angle-angle range-Doppler imaging and vibration), wind measurements (air data, ballistic winds, wake detection, clear air turbulence), laser designation and optical countermeasures. Achieving this multifunctional capabilty with a single transmitter is critical for airborne operation, both for cost effectiveness and reduced overall size and mass. CTI proposes to combine recent key technlogy advances demonstrated in its laboratory with a tried and tested approach to high power end-pumping of two micron lasers, to develop a prototype agile waveform two micron laser transmitter that will support a number of multi-functional activities, including hard target range and micro-Doppler (vibration) imaging at 1-2kHz PRF, laser designation at 10Hz PRF, and airborne wind sensing at 200Hz-2kHz PRF. The laser will also be cavity-dumped at 10-20 kHz PRF, under which conditions the output can be used to efficiently pump optical parametric oscillators (OPO) to produce mid and far infra-red radiation for optical countermeasures. The laser transmitter performance goals are an average power of 10W for pulsed operation at 200 Hz to 20kHz PRF, and 150mJ pulses at 10Hz PRF when frequency-doubled to 1.064 microns.