Phase calibration of spatial light modulators by heterodyne interferometry

Ruisong Wang; Dong Li; Mingxi Hu; Jindong Tian

doi:10.1117/12.869961

17 November 2010 Phase calibration of spatial light modulators by heterodyne interferometry

Ruisong Wang, Dong Li, Mingxi Hu, Jindong Tian

Proceedings Volume 7848, Holography, Diffractive Optics, and Applications IV; 78481F (2010) https://doi.org/10.1117/12.869961
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

In this paper, a method of measuring the phase modulation properties of spatial light modulator (SLM) by heterodyne interferometry is proposed. As a kind of key elements in the advanced optical information processing systems, spatial light modulators is widely used in many important fields, especially used as a dynamic phase modulating device. So, the phase calibration plays an important role in the SLM applications. Compared with the methods based on traditional interferometry, this method measures the phase response directly by taking advantage of the heterodyne mechanism, so it leads to higher accuracy. A heterodyne-interferometer based calibration system making use of acousto-optic frequencyshifters has been designed and realized. Theoretical analysis and experimental results demonstrate the validity of this method.

Citation Download Citation

Ruisong Wang, Dong Li, Mingxi Hu, and Jindong Tian "Phase calibration of spatial light modulators by heterodyne interferometry", Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78481F (17 November 2010); https://doi.org/10.1117/12.869961

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