When pumped with a 1-W laser diode, a Tm:YVO4 microchip laser produced 150 mW of 1.92-µm output in a near-diffraction-limited beam at room temperature. Using a Ti:Al2O3 laser to pump the same device, we showed that reducing the temperature of the Tm:YVO4 from 20 to -30 °C resulted in no measurable change in threshold and increased the slope efficiency by only 20%.
© 1995 Optical Society of America
J. J. Zayhowski, J. Harrison, C. Dill III, and J. Ochoa, "Tm:YVO4 microchip laser," Appl. Opt. 34, 435-437 (1995)