Interferogram region spreading technology in spatial domain

Jun-hong Su; Lei Chen; Ri-hong Zhu

doi:10.1117/12.676789

19 May 2006 Interferogram region spreading technology in spatial domain

Jun-hong Su, Lei Chen, Ri-hong Zhu

Proceedings Volume 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 615028 (2006) https://doi.org/10.1117/12.676789
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

The kernel of modern interferometry is to obtain necessary surface shape and parameter by processing interferogram with a reasonable algorithm. The circular interferogram must be spread into square region when the interferogram is dealt with by using 2-D FFT arithmetic, which is only applied to numeric discrete data and requires square distributing region. On the basis of the study of the basic principle of interferometry by using 2-D FFT arithmetic, the principle and the method of interferogram region spreading are proposed. This technique has been used in region spreading of an actual interferogram with a satisfactory result. The results indicate that the method, with high processing precision, has established the foundation for phase recovery.

Citation Download Citation

Jun-hong Su, Lei Chen, and Ri-hong Zhu "Interferogram region spreading technology in spatial domain", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615028 (19 May 2006); https://doi.org/10.1117/12.676789

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