Calculating Strehl ratio through radial shearing method

Yuanbiao Lu; Yongying Yang; Yangjie Chen; Yongmo Zhuo

doi:10.1117/12.572570

10 February 2005 Calculating Strehl ratio through radial shearing method

Yuanbiao Lu, Yongying Yang, Yangjie Chen, Yongmo Zhuo

Proceedings Volume 5638, Optical Design and Testing II; (2005) https://doi.org/10.1117/12.572570
Event: Photonics Asia, 2004, Beijing, China

Abstract

The approximate Strehl Ratio expressions that need only the wave phase distribution is not appropriate in the laser fusion system when the phase has great aberration. The accurate Strehl Ratio value need both the phase and the amplitude distribution information. The paper provide a method of reconstructing wave phase and amplitude distribution by a single radial shearing interferogram. The radial shearing interferometer based on spatial phase modulation is simple and stable, needs only one interferogram. The principle and structure of cyclic radial shearing interferometer are briefly discussed and the process of spatial phase modulation, Fourier transform method and wavefront reconstruction are analyzed. It also illluminates the physical meaning and establish the mathematical model. The process of getting SR value is simulated by computer. The simulation result indicates that the RMS error of the reconstructing wavefront can achieve λ/100.

Citation Download Citation

Yuanbiao Lu, Yongying Yang, Yangjie Chen, and Yongmo Zhuo "Calculating Strehl ratio through radial shearing method", Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); https://doi.org/10.1117/12.572570

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