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- W2004644709 abstract "We report holographic generation of higher-order Laguerre-Gaussian (LG) beams using a liquid crystal on siliconspatial light modulator (LCOS-SLM) device. In our experimental set-up, a flat-top light beam was projectedon the LCOS-SLM to generate LG beams of various mode indices without changes of the optical system. Additionally,the size of the holographic phase pattern was optimized for each beam to maximize the mode purityof the obtained beam. Holographic generation of LG beams is easily influenced by a distortion of the opticalsystem and deviation of the phase setting from an ideal one. Nevertheless, we obtained high-quality LG beamswith an additional phase pattern on the LCOS-SLM for canceling the distortion of the optical system and withcalibration of the phase control voltage for precise expression of the phase patterns. Numerical analyses arealso performed for two-dimensional beam profiles to verify the quality of the obtained beams. Through fittingthe obtained profiles to theoretical ones, we calculate the correlation coefficients R between the observed andfitted profiles to find that R > 0.95 for all beams and that the correlation coefficients behave similarly to thetheoretically estimated mode purities, facts indicating that the quality of the obtained LG beams is close to thetheoretical limit in our experiments." @default.
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- W2004644709 date "2008-02-07" @default.
- W2004644709 modified "2023-09-23" @default.
- W2004644709 title "High-quality generation of higher-order Laguerre-Gaussian beams using liquid crystal on silicon spatial light modulator" @default.
- W2004644709 doi "https://doi.org/10.1117/12.762538" @default.
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