二极管泵浦Nd∶GdVO_4晶体四波长激光器

Diode-pumped Nd∶GdVO_4 Laser Emitting at Four Wavelengths

采用简单的两镜腔结构,二极管泵浦Nd∶GdVO4晶体产生1063nm和1342nm近红外双波长调Q激光振荡。用KTP晶体和钽酸锂光学超晶格材料分别对1063nm和1342nm激光进行倍频,在泵浦功率为14W、声光开关重复频率15kHz时,同时获得1063nm和1342nm剩余基波功率为587mW和1.13W、相应的二次谐波绿光功率703mW和红光功率328mW的四波长激光输出,脉宽分别为23ns、55ns、18ns和43ns。

In this paper, a two-mirror resonant cavity was used for the Q-switched dual-wavelength operation of Nd：GdVO4 at 1063nm and 1342nm. Red and green lights were achieved by using PPLT and KTP as the harmonic generation crystals. When the incident pumping power was 14W and the pulse repetition rate was 15kHz, average output power of 587mW at 1063nm, 1.13W at 1342nm, 703roW at 532nm and 328mW at 671nm with the respective pulse durations of 23 ns. 55us, 18 us and 43us for quasi-cw operation were obtained.