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Efficient beam-correcting holographic collimator for laser diodes

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Abstract

We describe a method for recording a beam-correcting holographic collimator for laser diodes in the presence of recording-to-readout wavelength shift. An astigmatism-correcting, beam-shaping hologram recorded with this method at 488 nm displays a high-efficiency, near-diffraction-limited collimation of a diode beam at 820 nm.

© 1992 Optical Society of America

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