Controlling Total Spot Power from Holographic Laser by Superimposing a Binary Phase Grating

Xiang Lu, Jian Zhang, Yu Gan, and Liying Wu

Published by the Optical Society of America Optics Express Vol. 19, Issue 9, pp. 8498-8505 (2011)


By superimposing a tunable binary phase grating with a conventional computer-generated hologram, the total power of multiple holographic 3D spots can be easily controlled by changing the phase depth of grating with high accuracy to a random power value for real-time optical manipulation without extra power loss. Simulation and experiment results indicate that a resolution of 0.002 can be achieved at a lower time cost for normalized total spot power.

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