Optics Letters · 1996 · 13 citations · 3 references
Natural SciencesElectrical EngineeringOptoelectronicsPhotonicsSpectroscopyLaser Host MaterialsLaser OpticsLaser PhysicsLaser SpectroscopyOptical SourcesUpconversion MaterialsExcited-state AbsorptionGround State PropertiesHigh-power LasersLaser Gain MaterialsPower OutputSolid-state LasersUpconversion Luminescence
Cw room-temperature upconversion laser operation is reported in Pr:YLF at 640 and 607 nm. An intracavitypumping scheme that uses a Yb:YAG laser operating at 1030 nm to pump the weak (3)H(4) ? (1)G(4) ground-state transition of Pr:YLF is used to populate the intermediate metastable level. An excited-state absorption at 867 nm is then used to populate the (3)P(0) and (3)P(1) upper states. An average output power of 3.5 mW was obtained at 607 nm, with a combined input pump power of 2.5 W.
3
Green upconversion continuous wave Er3+:LiYF4 laser at room temperature
F. Heine, E. Heumann, T. Danger et al. · Applied Physics Letters · 1994 · 131 citations · Full text