论文部分内容阅读
采用提拉法成功生长出了高光学质量的Tm,Ho∶LuAG(Lu3Al5O12)激光晶体,对其光谱性能进行了研究。测量了晶体320~3000nm范围内的吸收光谱,在784nm附近有较宽的吸收带,半峰全宽约为12nm。用784nm半导体激光器(LD)作激发源,测量了晶体2800~3000nm范围内的稳态荧光光谱,并用光参量振荡(OPO)脉冲激光激发,测量了晶体的瞬态荧光光谱,对数据曲线进行指数衰减拟合,获得了晶体2.9μm附近波长激光上下能级5I6和5I7的寿命,分别为51μs和7.5ms。与Tm,Ho∶YAG(Y3Al5O12)晶体的光谱参数进行了比较,结果表明,Tm,Ho∶LuAG是一种相对容易获得2.911μm中红外激光输出的激光晶体。
The high optical quality Tm, Ho:LuAG (Lu3Al5O12) laser crystals were successfully grown by Czochralski method and their spectral properties were studied. The absorption spectrum of the crystal in the range of 320-3000 nm was measured. There was a broad absorption band around 784 nm, and the full width at half maximum was about 12 nm. The steady state fluorescence spectra in the range of 2800 ~ 3000 nm were measured with a 784 nm semiconductor laser (LD) as excitation source. The transient fluorescence spectra of the crystals were measured by optical parametric oscillation (OPO) pulsed laser excitation. The data curve was exponentially Attenuation fitted the lifetime of the upper and lower energy levels of 5I6 and 5I7 at the wavelength of 2.9μm, which were 51μs and 7.5ms, respectively. Compared with the spectral parameters of Tm, Ho: YAG (Y3Al5O12) crystals, the results show that Tm and Ho:LuAG are relatively easy to obtain the laser crystal with 2.911μm mid-infrared laser output.