AFWL Scanning Interferometer.
AIR FORCE WEAPONS LAB KIRTLAND AFB N MEX
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A method has been developed for determining the Optical Transfer Function of a coherent optical system by edge scanning a focused output sample of the system across a detector to obtain the Edge Response Function. This Function is then electronically differentiated and Fourier Transformed to yield the Optical Transfer Function and the Point Spread Function. Experimentally generated Edge Response Functions, Line Spread Functions, Optical Transfer Functions, and Point Spread Functions were compared to theoretical predictions for a laboratory HeNe optical system and excellent agreement was obtained. Applications of this technique to laser beam control systems are discussed.
- Test Facilities, Equipment and Methods