1 August 2002 Error analysis of gratings in optical pickup heads
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Abstract
To achieve precise energy distribution among light beams diffracted by a rough surface-relief grating in optical pickup heads, we model the grating with a scalar theory. The grating is assumed to be a trapezoid shape with different roughnesses for the top and the bottom surfaces. The model includes rectangle, triangle, and sawtooth shapes as special cases. Using this model, we investigate the influence of grating parameters on diffraction efficiencies and deduce Strehl ratios for different surface roughness values.
© (2002) Society of Photo-Optical Instrumentation Engineers (SPIE)
Haitao Zhang, Haitao Zhang, Ruizhen Cui, Ruizhen Cui, Mali Gong, Mali Gong, Dazun Zhao, Dazun Zhao, Ping Yan, Ping Yan, Weipu Jia, Weipu Jia, } "Error analysis of gratings in optical pickup heads," Optical Engineering 41(8), (1 August 2002). https://doi.org/10.1117/1.1486244 . Submission:
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