Phase shifting using dislocated gratings and application in computer-generated free-space and waveguide holograms

Ming Li; Anders G. Larsson; Jorgen Bengtsson; Sigurgeir Kristjansson

doi:10.1117/12.274424

15 May 1997 Phase shifting using dislocated gratings and application in computer-generated free-space and waveguide holograms

Ming Li, Anders G. Larsson, Jorgen Bengtsson, Sigurgeir Kristjansson

Author Affiliations +

Proceedings Volume 3010, Diffractive and Holographic Device Technologies and Applications IV; (1997) https://doi.org/10.1117/12.274424
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

A novel scheme is proposed to introduce continuous-level phase shift using only binary (two-level) surface-relief grating- like structures. The desired phase shift is invoked by purposely dislocating the grating groove position along the direction perpendicular to the grating grooves. Based on this method, both free-space and guided-wave computer-generated holograms (CGHs) can be constructed. Design and experiments are presented in order to demonstrate the effectiveness of the proposed scheme.

Citation Download Citation

Ming Li, Anders G. Larsson, Jorgen Bengtsson, and Sigurgeir Kristjansson "Phase shifting using dislocated gratings and application in computer-generated free-space and waveguide holograms", Proc. SPIE 3010, Diffractive and Holographic Device Technologies and Applications IV, (15 May 1997); https://doi.org/10.1117/12.274424

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