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12 March 2020 Design of annular blazed grating for rotating beam
Jing Zhao, Dagong Jia, Fenjiao Yun, Hongxia Zhang, Tiegen Liu
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Proceedings Volume 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing; 114350A (2020) https://doi.org/10.1117/12.2543658
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China
Abstract
We designed an annular blazed grating to achieve maximum optical power in the +1st transmitted order at a fixed diffraction angle. We performed theoretical analysis and simulations on the designed grating, where the incident beam (wavelength: 1550 nm) was perpendicular to the grating surface. The diffraction efficiency in the +1st transmitted order was dependent on the blaze angle (or modulation depth) and period for a refractive index of 1.49. The diffraction efficiency in the +1st transmitted order was maximum (85.94%) at a modulation depth and period of 2.18 μm and 3.96 μm, respectively, and the corresponding diffraction angle was 45.3°.
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Jing Zhao, Dagong Jia, Fenjiao Yun, Hongxia Zhang, and Tiegen Liu "Design of annular blazed grating for rotating beam", Proc. SPIE 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing, 114350A (12 March 2020); https://doi.org/10.1117/12.2543658
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KEYWORDS
Diffraction gratings
Optical design
Diffraction
Modulation
Optical simulations
Refractive index
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