专利名称：Method of altering reflectivity of optical
elements
发明人：Paul F. Robusto,David D. Scofield,Chan H.
Wang,John C. Hamacher
申请号：US07/246709申请日：19880920公开号：US04893900A公开日：19900116
摘要：A method for restricting the mode of operation of long wavelength waveguidelaser (FIG. 1) by introducing an approximate step function into the reflectivity of circularoptical elements (19) used in such lasers. The preferred method is to grind off a portionof the optical coating (20) of the optical element (19) leaving a circular unground region(26) of high reflectivity having a diameter (D) of approximately 60% of the laser borewidth (b) bounded by a ground region (28) of lower reflectivity. The method permitssimple, inexpensive field modification of existing lasers.
申请人：HUGHES AIRCRAFT COMPANY
代理人：Joseph E. Szabo,Wanda K. Denson-Low
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