C. Ortiz, R.M. Macfarlane, et al.
Applied Physics
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.
C. Ortiz, R.M. Macfarlane, et al.
Applied Physics
W. Lenth, W.J. Kozlovsky, et al.
SPIE OE/LASE 1990
R.W. Syme, H. Morawitz, et al.
Solid State Communications
Paul M. Lundquist, C. Poga, et al.
Optics Letters