Louyer Yann, Wallerand Jean-Pierre, Himbert Marc, Deneva Margarita, Nenchev Marin
Bureau National de Métrologie, Institut National de Métrologie, Conservatoire National des Arts et Métiers, 292 rue Saint Martin, Paris 75003, France.
Appl Opt. 2003 Sep 20;42(27):5463-76. doi: 10.1364/ao.42.005463.
We demonstrate and investigate a peculiar mode of cw Yb3+-doped crystal laser operation when two emissions, at two independently tunable wavelengths, are simultaneously produced. Both emissions are generated from a single pumped volume and take place in either a single beam or spatially separated beams. The laser employs original two-channel cavities that use a passive self-injection-locking (PSIL) control to reduce intracavity loss. The advantages of the application of the PSIL technique and some limitations are shown. The conditions for two-wavelength multimode operation of the cw quasi-three-level diode-pumped Yb3+ lasers and the peculiarity of such an operation are carried out both theoretically and experimentally. The results reported are based on the example of a Yb3+:GGG laser but similar results are also obtained with a Yb3+:YAG laser. The laser operates in the 1023-1033-nm (1030-1040-nm) range with a total output power of 0.4 W. A two-wavelength, single longitudinal mode generation is also obtained.
我们展示并研究了连续波掺镱晶体激光器的一种特殊工作模式，即同时产生两个独立可调谐波长的发射。这两种发射均来自单个泵浦体积，且发生在单束光或空间分离的光束中。该激光器采用了原始的双通道腔，利用被动自注入锁定（PSIL）控制来降低腔内损耗。展示了PSIL技术应用的优点及一些局限性。从理论和实验两方面研究了连续波准三能级二极管泵浦掺镱激光器双波长多模工作的条件以及这种工作模式的特性。所报道的结果以Yb3+:GGG激光器为例，但用Yb3+:YAG激光器也获得了类似结果。该激光器在1023 - 1033纳米（1030 - 1040纳米）范围内工作，总输出功率为0.4瓦。还实现了双波长单纵模产生。
