[摘要]：A simultaneous dual-wavelength eye-safe laser at around 1.9 and 1.7 mu m based on only a single KTiOAsO4 (KTA) intracavity optical parametric oscillator (IOPO) is firstly reported. The dual-wavelength-IOPO is driven by an acousto-optic (AO) Q-switched Nd:YAG laser, which is simultaneously oscillated at the radiations of 1.3 and 1.06 mu m. Within the KTA-IOPO cavity, the signal output waves of IOPO at the wavelength of 1.9 and 1.7 mu m are pumped by the 1.3 and 1.06 mu m radiations from Nd:YAG laser, respectively. With the laser diode pumped power of 100 W and the pulse repetition rate of 4 kHz, the maximum average output power of 1.3 W at 1895 nm with the pulse duration of 30 ns and that of 0.9 W at 1715 nm with the pulse duration of 18 ns are obtained. With different diode pump power, the central wavelength of IOPO signal light at 1.9 mu m is tunable from 1850 to 1895 nm, while the other signal wave at 1.7 mu m is from 1650 to 1715 nm. [GRAPHICS] The output power of 1.9 mu m and 1.7 mu m versus the pulse repetition rate (PRR) at the diode-pump power of 100 W (C) 2011 by Astro Ltd. Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA
