1 September 1993 New coding technique to obtain multilevel computer-generated holograms in one step
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Abstract
We used a binary coding scheme based on optical density inside a basic cell to produce a smooth multilevel phase pattern on a photoresist film. This technique, which is as simple as a contact copy, is very easy to control for our type of computer-generated holograms. Preliminary results show that a good blazed profile can be obtained with minimum equipment at low cost. Specialized transmission holograms produced with this technique showed a 40% diffraction efficiency and good quality for 632.8-nm radiation.
Guylain Lemelin, Guylain Lemelin, Roger A. Lessard, Roger A. Lessard, } "New coding technique to obtain multilevel computer-generated holograms in one step," Optical Engineering 32(9), (1 September 1993). https://doi.org/10.1117/12.145065 . Submission:
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