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Design and optimization of a volume-phase holographic grating for simultaneous use with red, green, and blue light using unpolarized light. | LitMetric

AI Article Synopsis

  • Volume-phase holographic (VPH) gratings are crucial for applications in fields like optical communication, imaging, and astronomy.
  • The paper discusses a VPH grating designed to efficiently operate across red, green, and blue wavelengths, achieving 98% efficiency at 532 nm and at least 75% efficiency in the 400-700 nm range for unpolarized light.
  • Fabrication optimization focuses on using a 12 μm thick layer of dichromated gelatin with specific properties to enhance performance and tolerance.

Article Abstract

Volume-phase holographic (VPH) gratings have been designed for use in many areas of science and technology, such as optical communication, optical imaging, and astronomy. In this paper, the design of a volume-phase holographic grating, simultaneously optimized to operate in the red, green, and blue wavelengths, is presented along with a study of its fabrication tolerances. The grating is optimized to produce 98% efficiency at λ=532  nm and at least 75% efficiency in the region between 400 and 700 nm, when the incident light is unpolarized. The optimization is done for recording in dichromated gelatin with a thickness of 12 μm, an average refractive index of 1.5, and a refractive index modulation of 0.022.

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Source
http://dx.doi.org/10.1364/AO.55.001618DOI Listing

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