2) Optical Enhancement of Diffraction Efficiency of Texas Instruments Phase Light Modulator by Talbot Imaging-Based Pixel Matching for Infrared LIDAR Beam Steering

Date Published: February 22, 2022

Periodicity of the Computer Generated Holograms (CGHs) for beam steering makes it possible to utilize the Talbot self-phase-image of the CGH to enhance the diffraction efficiency in the infrared domain. First, the phase CGH pattern is displayed on Texas Instrument Phase Light Modulator (TI-PLM). The Talbot image formed by the periodic phase CGH is superimposed on top of the PLM itself by light recycling optics employing polarization. The architecture doubles phase modulation by a factor of two, which enables using TI-PLM designed for visible wavelength for infrared laser beam steering for lidar applications. View the Presentation at Photonics West 2022 here. Download the conference proceedings.

Authors include: Zhipeng Dong, Eunmo Kang, Jiafan Guan, Xianyue Deng, Chuan Luo, Yuzuru Takashima, The Univ. of Arizona (United States)

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Schematic optical system to enhance diffraction efficiency by employing Talbot image and light recycling

Schematic optical system to enhance diffraction efficiency by employing Talbot image and light recycling.