Abstract

We have demonstrated 1.15 W of Gaussianlike (M2 = 2) cw output at 2.94 µm from a diode laser end-pumped monolithic laser crystal composed of Er-doped yttrium aluminum garnet (YAG) bonded to undoped YAG. The laser was pumped with two polarization-coupled 2.5-W flared laser diodes that provided a 45-µm pump waist with a low N.A. (<0.04). Output at 2.94 µm was generated with a 34% slope efficiency and a greater-than-unity quantum efficiency.

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  1. D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).

Chen, Da-Wun

D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).

Fields, Penny A.

D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).

Fincher, Curt L.

D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).

Rose, Todd S.

D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).

Vernon, Frank L.

D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).

Opt. Lett.

D. -W. Chen, C. L. Fincher, T. S. Rose, F. L. Vernon, and R. A. Fields, "Diode-pumped 1-W continuous-waveErYAG 3-mm laser," Opt. Lett. 24, 385-387 (1999).