Patent ID: 6650684
Filing Date: 2003-11-18
Classification: H01S

Abstract:
A SEL comprising:a light generation layer for generating light in response to light passing therethrough; first mirror means for reflecting light generated in said light generation layer toward said light generation layer such that said reflected light adds coherently to said light generated in said light generation layer; and second mirror means for reflecting light generated in said light generation layer toward said light generation layer such that said reflected light adds coherently to said light generated in said light generation layer. wherein said light generation layer lies between said first and second mirror means, and wherein said first mirror means includes a localized imperfection region which causes light interacting with said imperfection region to be attenuated or shifted in phase relative to light that does not interact with said imperfection region, and wherein said first mirror means comprises a phase correcting layer, said phase correcting layer altering the phase of said light passing therethrough and wherein said localized imperfection comprises a region of said phase correcting layer having an index of refraction differing from the index of refraction of the remainder of said phase correcting layer.