We propose a new class of optical wave-front transformer based on a different mechanism that uses the multiple-reflection interference effect in a Gires–Tournois resonator (GTR) as the physical mechanism for phase modification. By coating the front surface of a GTR with a predefined graded reflectivity profile, one can synthesize various optical elements. We present the basic concept of our proposal by synthesizing a lenslike element as a proof-of-principle example. One unique feature of this element is that it can function as a reflecting mirror, a converging lens, or a diverging lens, depending on the resonator length. Other applications are briefly discussed.
© 1997 Optical Society of America
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(230.5750) Optical devices : Resonators
(350.5030) Other areas of optics : Phase
Benjamin B. Dingel, Masayuki Izutsu, and Koji Murakawa, "Optical wave-front transformer using the multiple-reflection interference effect inside a resonator," Opt. Lett. 22, 1449-1451 (1997)