Dual wavelength visible upconversion laser

McFarlane, R. A.
June 1989
Applied Physics Letters;6/5/1989, Vol. 54 Issue 23, p2301
Academic Journal
Laser operation has been obtained at 551 and 671 nm by pumping 5% Er:YLiF4 at 791 nm. Time dependence studies of the emission show that the excitation process has a component related to cooperative energy transfer, and a component related to stepwise multiple photon absorption. Self-Q-switched operation at 551 nm is seen to impart a time dependence to an otherwise cw output at 671 nm.


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