7 February 2005 Fabrication of apodized grating in photopolymer using SLM
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Fabricating holographic apodized gratings is often impeded by nonlinear property of materials, which makes the resultant profile out of expectation. In this paper, the new scheme to fabricate Gaussian apodized grating is proposed. Instead of fixed Gaussian recording beams, recording beam profiles that can compensate the nonlinear sensitivity of the material at low recording intensities are created by a gray level spatial light modulator (SLM). DuPont’s HRF-150-38 photopolymer is chosen because of its stability and ease to use. As the first result of the experiment, a Gaussian grating of 2.7±0.02mm standard deviation is recorded at 0.3mW/cm2 recording intensity after exposure of 300 seconds.
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Duc-Dung Do, Junghoi Kim, Nam Kim, Sang-Keun Gil, Kwon-Yeon Lee, and Mun Cheol Paek "Fabrication of apodized grating in photopolymer using SLM", Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (7 February 2005); doi: 10.1117/12.578204; https://doi.org/10.1117/12.578204

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