Tunable cw blue, green, orange and red upconversion fiber lasers at room temperature

摘要

The authors report tunable cw laser actions at 491-493nm, 517-540nm, 605-622nm and 635-637nm in Pr(sup 3+)/Yb(sup 3+) doped ZBLAN optical fibers. A tunable Ti:Al(sub 2)O(sub 3) laser was used as the pump source to simulate diode laser pumping. With 60 nW launched power, the excitation wavelength of the lasers was in the range of 780nm to 880nm. 300mW Output power has been achieved at 635nm with 760mW launched power at 860nm. With the pump wavelength at 860nm, the authors have also demonstrated stimulated emissions of 45mW at 615 nm with 430mW launched power, 20mW at 520 and 4mW at 493nm with 200mW launched power. (ERA citation 19:033697)