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16 March 2015 Polarization-independent light-dispersing device based on diffractive optics
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Proceedings Volume 9359, Optical Components and Materials XII; 935915 (2015)
Event: SPIE OPTO, 2015, San Francisco, California, United States
We report a light-dispersing device comprised of two transmission gratings and a wave plate. The gratings split the light incident at the Bragg angle into two orthogonally polarized components. The wave plate, which is placed between the gratings, functions as a polarization converter for oblique illumination. Appropriate assembly of these optical parts results in efficient diffraction of the unpolarized light with high spectral resolution. Using coupled-wave theories and Mueller matrix analysis, we constructed a device with a grating period of 400 nm for the spectral range of 680 ± 50 nm. We verified the proposed polarization-independent light-dispersing concept from the evaluation of this device.
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J. Amako and E. Fujii "Polarization-independent light-dispersing device based on diffractive optics", Proc. SPIE 9359, Optical Components and Materials XII, 935915 (16 March 2015);

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