R.M. Macfarlane, D.P. Burum, et al.
Physical Review B
Green laser emission at 551 nm was achieved in LiYF4: Er3+ by upconversion pumping with a near-infra-red diode laser at low temperature. Using a 2mm-long monolithic laser crystal the lasing threshold was reached with 34 mW of absorbed power from an AlGaAs diode-laser array. © 1989, The Institution of Electrical Engineers. All rights reserved.
R.M. Macfarlane, D.P. Burum, et al.
Physical Review B
H. Guenther, R.M. Macfarlane, et al.
CLEO 1998
R.M. Macfarlane, E.A. Whittaker, et al.
Electronics Letters
R.M. Macfarlane, F. Könz, et al.
Journal of Luminescence