We demonstrate the feasibility of implementing the generalized phase-contrast (GPC) method in a planar-integrated micro-optics platform. An entire 4-<i>f</i> diffractive lens system with a Fourier plane phase-only filter has been designed and manufactured in a 50-mm-diameter fused-silica substrate by use of a four-level multimask lithography. Experimental results show successful conversion of an input phase distribution into a high-contrast intensity distribution. The diffraction efficiency of the optical components is found to limit the operating range of the GPC system.
© 2002 Optical Society of America
(100.5070) Image processing : Phase retrieval
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(130.3120) Integrated optics : Integrated optics devices
(350.3950) Other areas of optics : Micro-optics
Vincent Daria, Jesper Glückstad, Paul C. Mogensen, René L. Eriksen, and Stefan Sinzinger, "Implementing the generalized phase-contrast method in a planar-integrated micro-optics platform," Opt. Lett. 27, 945-947 (2002)