Diffraction characteristics of orthogonal gratings analysis based on a spatial light modulator

The diffraction characteristics of orthogonal gratings with variable duty cycles and phase modulation depths are analyzed by using a spatial light modulator. The calculation methods of the transmission function, far-field diffraction light field, and diffraction efficiency of orthogonal gratings are...

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Bibliographic Details
Published in:Applied optics (2004) 2022-09, Vol.61 (25), p.7393
Main Authors: Zhai, Zhongsheng, Li, Qinyang, Yu, Xin, Zeng, Zhen, Lv, Qinghua, Feng, Wei, Xiong, Zhi, Wang, Xuanze
Format: Article
Language:English
Subjects:
Diffraction efficiency
Far fields
Gratings (spectra)
Laser arrays
Light diffraction
Optical communication
Optoelectronics
Parallel processing
Phase modulation
Spatial light modulators
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Summary:The diffraction characteristics of orthogonal gratings with variable duty cycles and phase modulation depths are analyzed by using a spatial light modulator. The calculation methods of the transmission function, far-field diffraction light field, and diffraction efficiency of orthogonal gratings are deduced in theory. Meanwhile, the influences of the duty cycle and phase modulation depth on the diffraction characteristics of the orthogonal grating are discussed. The simulation and experimental results verify the correctness of the theoretical derivation. This method can be widely used in the fields of an optical vortex array, laser parallel processing, optical computing, optical communication, and optoelectronic hybrid processing.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.467540