28 May 2014 Analysis of the quantitative measurement for a lateral shear interferometer in a convergent beam mode using Fourier transform method
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Abstract
Lateral shear interferometry operating in the convergent beam mode has been used for testing optical components. This method is simple and phase information of the wavefront has conventionally been extracted using phase stepping techniques. We propose to use defocus, which introduces uniform tilt as a means of extracting phase information via two procedures, namely spatial phase stepping and spatial frequency carrier method. Experimental results are presented that show the wavefront phase extracted with defocus before and after the focal point of the lens.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Charles Joenathan, Ashley Bernal, Youn Woonghee, Yanzeng Li, Wanseok Oh, "Analysis of the quantitative measurement for a lateral shear interferometer in a convergent beam mode using Fourier transform method," Optical Engineering 53(5), 054109 (28 May 2014). https://doi.org/10.1117/1.OE.53.5.054109
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