High Radiance AlGaAs Laser Illuminator.
Final rept. Jan 73-Mar 74,
RCA ADVANCED TECHNOLOGY LABS BURLINGTON MASS
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The scope of the program was to conduct research and development of a High Radiance Aluminum Gallium Arsenide AlGaAs Laser Illuminator and to fabricate, test and deliver an experimental model of the system developed. This development was aimed at a reduction in the exit aperture, size, and weight of the projection optical system required for a narrow field, high power, liquid nitrogen LN2 cooled illuminator used in conjunction with gated Low Light Level TV systems. In order to achieve these goals, the development was aimed at producing an improvement in the average brightness of the injection laser array. This was accomplished by reducing the beam divergence from the injection laser diode arrays through use of a micro-cylindrical lens method. Details of this method, its application to an array and optical integrator assembly and incorporation into an illuminator system are covered.
- Lasers and Masers
- Infrared Detection and Detectors