Blonder, GregChandross, EdwinHo, Seng-TiongMcCall, SamuelSlusher, RichartWest, Kenneth2019-07-092019-07-091992-10-271990-09-28Greg Blonder, Edwin Chandross, Seng-Tiong Ho, Samuel McCall, Richart Slusher, Kenneth West. "Distributed Bragg reflectors and devices incorporating same." U.S. Patent 5,158,908-A.5,158,908https://hdl.handle.net/2144/36292Distributed Bragg Reflectors of high efficacy based on alternating layers of large difference in refractive index are fabricated by epitaxial growth followed by etchant removal and back-filling to produce a structure in which alternation is between layers of retained epitaxially grown material and layers of back-filled material. Such reflectors may serve simply as mirrors or may be incorporated in a variety of devices including lasers, LEDs, detectors, optical switches in which the DBRs serve e.g. for cavitation.Patent421326