4 x 4 fan-out spot generator using GaAs based VCSEL's and diffractive optical element
- 1 April 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 9 (4) , 508-510
- https://doi.org/10.1109/68.559404
Abstract
We report the hybrid operation of a computer generated diffractive optical element, or kinoform, and a vertical cavity surface emitting laser, both elements being GaAs based. Using the laser as the optical input source the binary kinoform is shown to produce a focused 4/spl times/4 fan-out spot array, Diffraction efficiencies of approximately 20% and near diffraction limited spots are obtained for single moded VCSELs. The kinoform is also shown to function successfully for larger, multi-moded, VCSELs without significant performance drop.Keywords
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