Qu Biao, Huang Qilu
Appl Opt. 2020 Apr 1;59(10):3033-3037. doi: 10.1364/AO.387506.
We report on blue-diode-pumped continuous-wave : (YLF) visible lasers involving a less investigated 670 nm laser emission. In the free-running regime, a simultaneous dual-wavelength operation at 670 and 639 nm is achieved with a maximum output power of 1.67 W and a slope efficiency of 20.4%. Using a (YAG) plate as an intracavity etalon, we have suppressed the 639 nm emission, and then a single-wavelength laser at 670 nm has been achieved with a maximum output power of 0.96 W and slope efficiency of 12.7%. The directly generated 670 nm laser source from Pr:YLF crystal with watt-level output power has advantages over diode laser or frequency-doubled : lasers operating at a similar laser wavelength, which could be used in biomedical technologies.
我们报道了蓝光二极管泵浦连续波掺镨钇锂氟化物（Pr:YLF）可见激光器，其中涉及较少研究的670纳米激光发射。在自由运转状态下，实现了670纳米和639纳米的同时双波长运转，最大输出功率为1.67瓦，斜率效率为20.4%。使用一块钇铝石榴石（YAG）板作为腔内标准具，我们抑制了639纳米的发射，随后实现了670纳米的单波长激光器，最大输出功率为0.96瓦，斜率效率为12.7%。由Pr:YLF晶体直接产生的具有瓦级输出功率的670纳米激光源，相较于工作在类似激光波长的二极管激光器或倍频Nd:YAG激光器具有优势，可用于生物医学技术。
