青紫色半導体レーザー励起によるエネルギー移動固体色素レーザーの発振

摘要

Wereport the lasing characteristics of solid -state dye lasers that contain two mixed dyes. Pvromethene 567(P567)or rhodamine 6G(Rh6G)was codoped with coumarin 540A(C540A)as an acceptor dye. Using a 406 -nm-laser diode as a pump source, we obtained energy transferred laser oscillations in the range of 550 -590 nm with a C540A/P567 codoped laser and in the range of 560-600 nm with a C540A/e Rh6G codoped laser. The threshold pump power was reduced, and the durability of the lasers was improved b y incorporating the two different dyes.