Ms. Yaru Su Profile

Yaru Su

at Shanghai Institute of Optics and Fine Mechanics

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Proceedings Article | 12 October 2016 Paper

Influence of temperature on the optical system with large diameter off-axis parabolic lenses

Yaru Su, Hao Ruan, Jie Liu

Proceedings Volume 9818, 98180Z (2016) https://doi.org/10.1117/12.2248314

KEYWORDS: Lenses, Temperature metrology, Wavefront aberrations, Diffraction gratings, Diffraction, Photovoltaics, Mirrors, Holography, Off axis mirrors, Zemax

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In this work, an optical system with large diameter off-axis parabolic lenses was adopted to achieve diffraction gratings by laser interference exposure. The diffraction wavefront aberration caused by temperature variations was simulated using ZEMAX. Through theoretical analysis and optical simulation, it is proved that the diffraction wavefront aberration of holographic grating caused by the pinhole’s location errors (it is assumed that when the displacement of pinhole exists along one axis, the locations of the pinhole along the other two orthogonal axes are in a state of precise adjustment ) is much larger when the displacement occurs along z axis than along the other two axes, and the diffraction wavefront aberration is the smallest when the displacement occurs along x axis. If the ambient temperature changes by 1 degree, the PV value is 0.0631λ when the location of the pinhole changes by 0.121mm along z axis, 0.0034λor 0.0672λ when the location of the pinhole changes by 0.002mm along x axis or 0.03mm along y axis. To reach the diffraction limit (that means the PV value is 0.25λ), the decentering value of the pinhole along z axis should be less than 0.0341mm. In conclusion, the position error along z axis is an important factor to influence the PV value of diffraction grating, and the effect of temperature on the PV value of diffraction grating can be neglected.

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