A room-temperature blue upconversion laser operating at 455 nm is demonstrated in a Tm3+-doped fluorozirconate fiber when the laser is excited simultaneously at 645 and 1064 nm, permitting as much as 3 mW of cw blue laser output.
© 1994 Optical Society of America
Original Manuscript: July 19, 1994
Published: December 1, 1994
M. P. Le Flohic, J. Y. Allain, G. M. Stéphan, and G. Mazé, "Room-temperature continuous-wave upconversion laser at 455 nm in a Tm3+ fluorozirconate fiber," Opt. Lett. 19, 1982-1984 (1994)