Enhanced oscillation of tunable organic polymeric laser using photo-induced periodic gain

摘要

Periodic pumping of UV-cured organic polymer TEMA (thio ether methacrylate) with dye dopant (Rhodamine-B) by interference pattern of a frequency doubled Nd:YAG 532 nm laser leads to an extremely enhanced and a tunable lasing operation. Changing the period of a stable interference pattern by adoption of the Koester prism, its oscillation wavelength can be photonically selected out. The output powers obtained with various resonator schemes are also compared along with discussion.