简介：Anintracavityfrequency-doubledverticalexternalcavitysurfaceemittinglaser(VECSEL)withgreenlightisdemonstrated.ThefundamentalfrequencylasercavityconsistsofadistributedBraggreflector(DBR)ofthegainchipandanexternalmirror.A12-mWfrequency-doubledoutputhasbeenreachedat540nmwithanonlinearcrystalLBOwhenthefundamentalfrequencyoutputis44mWat1080nm.Thefrequencydoublingefficiencyisabout30%.
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