Efficient and stable dye laser action from modified dipyrromethene BF[sub 2] complexes

Costela, A.; Garcı´a-Moreno, I.; Go´mez, C.; Amat-Guerri, F.; Sastre, R.
July 2001
Applied Physics Letters;7/16/2001, Vol. 79 Issue 3
Academic Journal
We report on the lasing action of modified dipyrromethene BF[sub 2] complexes in air-equilibrated liquid solutions. All recent dyes share a common chromophore core and were dissolved in apolar, polar nonprotic, and polar protic solvents. When pumped transversely at 534 nm, nearly solvent-independent laser emission was obtained with efficiencies well over 40% in most cases. Highest lasing efficiency was 59%. Under continuous ultraviolet irradiation some of these dyes demonstrated improved photostability as compared with commercial dye pyrromethene 567. © 2001 American Institute of Physics.


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