کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
735807 893663 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Collimation testing using wedge plate lateral shearing interferometry and Fourier fringe analysis
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Collimation testing using wedge plate lateral shearing interferometry and Fourier fringe analysis
چکیده انگلیسی

For checking the collimation of an optical beam Fourier fringe analysis has been incorporated into the wedge plate interferometric setup. Typical interferograms corresponding to ‘in-focus’, ‘at-focus’ and ‘out-of-focus’ positions of an optical beam have been recorded. As per the testing procedure, FFT of the recorded interferometer is computed digitally, and necessary processing for direct determination of phase is undertaken. Finally, the phase data is unwrapped and plotted as a function of pixel position along the direction perpendicular to the shear. The slope of the phase provides the information regarding collimation position of the collimator. As the collimation position is detected by the direct measurement of the phase over the whole area of the interferogram, high accuracy, reliability and precision are achieved.


► Direct phase measurement using the Fourier fringe analysis has been used for collimation testing.
► Very simple, inexpensive and robust design of experimental setup.
► High accuracy, reliability and precision have been achieved.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 49, Issue 8, August 2011, Pages 1025–1031
نویسندگان
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