Error analysis of gratings in optical pickup heads

Haitao Zhang; Ruizhen Cui; Mali Gong; Dazun Zhao; Ping Yan; Weipu Jia

doi:10.1117/1.1486244

1 August 2002 Error analysis of gratings in optical pickup heads

Haitao Zhang, Ruizhen Cui, Mali Gong, Dazun Zhao, Ping Yan, Weipu Jia

Optical Engineering, Vol. 41, Issue 8, (August 2002). https://doi.org/10.1117/1.1486244

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)

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Haitao Zhang, Ruizhen Cui, Mali Gong, Dazun Zhao, Ping Yan, and Weipu Jia "Error analysis of gratings in optical pickup heads," Optical Engineering 41(8), (1 August 2002). https://doi.org/10.1117/1.1486244

Published: 1 August 2002

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