Abstract
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
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