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