Blue and green cw upconversion lasing in Er:YLiF4
- 22 October 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 57 (17) , 1727-1729
- https://doi.org/10.1063/1.104048
Abstract
Two new laser transitions are reported for the Er3+ ion in YLiF4: in the blue at 469.7 nm and in the green at 560.6 nm. These are pumped with red and near-infrared laser radiation using nonlinear excitation processes in which more than one upconversion step occurs, yet the threshold pump powers are as low as 10 mW. Single longitudinal mode cw operation was observed at temperatures below 40 K. This is the first report of a blue laser using the Er3+ ion, and the first report of an infrared-pumped blue laser.Keywords
This publication has 3 references indexed in Scilit:
- 551 nm diode-laser-pumped upconversion laserElectronics Letters, 1989
- Dual wavelength visible upconversion laserApplied Physics Letters, 1989
- Threefold upconversion laser at 0.85, 1.23, and 1.73 μm in Er:YLF pumped with a 1.53 μm Er glass laserApplied Physics Letters, 1989