title: Design and optimization of a volume-phase holographic grating for simultaneous use with red, green, and blue light using unpolarized light.
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.
authors.forename: Adoum H
authors.initials: AH
authors.lastname: Mahamat
authors.forename: Frank A
authors.initials: FA
authors.lastname: Narducci
authors.forename: James
authors.initials: J
authors.lastname: Schwiegerling