Zhou Xue, Mao Jiajia, Hu Ping, Li Jiatong, Zhang Jingkun, Nie Hongkun, Li Tao, Feng Tianli, Zhang Baitao, He Jingliang, Yang Kejian
Opt Express. 2024 May 6;32(10):17028-17037. doi: 10.1364/OE.521454.
Efficient diode-pumped continuous-wave (CW) and wavelength tunable Tm:YAP lasers based on the vibronic and electronic transitions are investigated. A total maximum output power of 4.1 W is achieved with multi-wavelength output around 2162 nm and 2274 nm, corresponding to a slope efficiency of 29.8% for a 3 at. % Tm:YAP crystal. A maximum output power of 2.48 W with a slope efficiency of 25.4% is obtained at 2146 nm for a 4 at. % Tm:YAP crystal. Using a birefringent filter (BF), the emission wavelengths of the Tm:YAP laser are tuned over spectral ranges of 59 nm from 2115 nm to 2174 nm and 127 nm from 2267 nm to 2394 nm, respectively, which is the first demonstration of wavelength tunable Tm:YAP laser based on the electronic transition H→H and vibronic transition F→H, to the best of our knowledge. The results show great potentials of the Tm:YAP crystal for realizing efficient lasers in the spectral range of 2.1-2.4 µm.
研究了基于振动和电子跃迁的高效二极管泵浦连续波（CW）和波长可调谐Tm:YAP激光器。对于3at.%的Tm:YAP晶体，在2162nm和2274nm附近实现了多波长输出，总最大输出功率为4.1W，斜率效率为29.8%。对于4at.%的Tm:YAP晶体，在2146nm处获得了2.48W的最大输出功率，斜率效率为25.4%。使用双折射滤光片（BF），Tm:YAP激光器的发射波长分别在从2115nm到2174nm的59nm光谱范围内和从2267nm到2394nm的127nm光谱范围内进行调谐，据我们所知，这是基于电子跃迁H→H和振动跃迁F→H的波长可调谐Tm:YAP激光器的首次演示。结果表明，Tm:YAP晶体在实现2.1-2.4μm光谱范围内的高效激光器方面具有巨大潜力。
