Proceedings PaperLaser Diode Collimators For Free Space Optical Communications
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A laser diode collimator based on a conventional four-element design was optimized for application to free space optical communication systems. The collimators were fabricated using conventional techniques and aligned interferometrically. Test results indicate the rms wavefront errors of the assembled collimators ranged from 0.039 wave to better than 0.020 wave rms, exceeding the minimum 0.050 wave requirement. Several advanced collimator designs using aspheres and finished lens molding (FLM) technology are currently under investigation. One design has been fabricated and tested.