A technique is proposed theoretically and verified experimentally to eliminate a zero-order beam caused by a pixelated phase-only spatial light modulator (SLM) for holographic projection. The formulas for determination of the optical field in the Fourier plane are deduced, and the influence of the pixelated structure of a SLM on the intensity of the zero-order beam is numerically investigated. Two currently existing techniques are studied and a new one is presented. These three techniques are used separately to eliminate the zero-order interruption, and the optical performances of the reconstructed patterns are compared. The new technique results in higher reconstruction quality and diffraction efficiency. A short animated movie is illuminated for holographic projection display. The experimental results show that the zero-order beam can be efficiently eliminated by the new technique. It is believed that this technique can be used in various optical systems that are based on pixelated phase-only SLMs, such as holographic optical tweezers and optical testing systems.
© 2009 Optical Society of AmericaFull Article | PDF Article
More Like This
Jinyang Liang, Sih-Ying Wu, Fredrik K. Fatemi, and Michael F. Becker
Appl. Opt. 51(16) 3294-3304 (2012)
Darwin Palima and Vincent Ricardo Daria
Appl. Opt. 46(20) 4197-4201 (2007)
Appl. Opt. 50(20) 3579-3588 (2011)