2004年4月1日 · Ca 4 GdO (BO 3) 3 is one of complexes in the calcium rare earth oxoborate family, with general composition Ca 4 LnO (BO 3) 3 (Ln=La–Lu, Y) [2]. The compound can crystallize readily with a monoclinic acentric structure, the space group is Cm. The crystal structure consists of BO 3 triangles and one oxygen ion O (1), which is free from boron.

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2002年7月17日 · A complex spectroscopic study of Ca 4 GdO(BO 3) 3 (GdCOB) doped with Pr 3+ has been performed experimentally and theoretically using the ab initio configuration interaction (CI) calculation method. This approach is based on the numerical discrete-variational Dirac-Slater cluster calculations and numerical solution of the Dirac equation using ...

Large and good-optical-quality crystals of gadolinium and calcium oxoborate, Ca 4 GdO (BO 3) 3 (GdCOB) have been grown from a melt by the Czochralski pulling method. The crystal is absolutely insensitive to moisture.

1997年9月1日 · Gadolinium calcium oxoborate, Ca 4 GdO(BO 3) 3 (GdCOB), is an efficient nonlinear borate crystal presenting suitable sites for activator ions. Nd 3+ doped GdCOB has been investigated as a new laser crystal in order to develop a self-frequency doubling material.

2001年7月1日 · The main spectroscopic properties (absorption, emission, decay times) of Pr 3+-doped Ca 4 GdO(BO 3) 3 (GdCOB) have been determined for the three X, Y, Z polarizations. The Judd–Ofelt analysis, extended to anisotropic crystals, normalized and modified to take into account the influence of the 4f5d lowest energy level, has been performed and ...

2024年3月27日 · 我们报告了一种基于从 2 阶跃迁的准三能级激光泵浦 Ca 4 GdO(BO 3) 3 (Yb:GdCOB) 可调谐激光器 F 5/2 级至 2 F 7/2 级。通过调节902 nm泵浦功率，获得了近红外波长从1030 nm移动到1036 nm的连续波Yb:GdCOB激光器。

Spectroscopic and laser investigations of ytterbium-doped Ca4GdO (BO3)3 (Yb:GdCOB), a new ytterbium-doped crystal, are reported. Laser performances under titanium:sapphire pumping suggest that this material is suitable for schemes that include laser-diode pumping.

The new nonlinear Ca/sub 4/GdO(BO/sub 3/)/sub 3/ (GdCOB) material has probably all the right properties to be used as an efficient crystal for frequency doubling. We recently demonstrated for the first time to our knowledge, the feasibility of optical waveguides in …

2018年8月15日 · We present what is, to the best of our knowledge, the first pure-three-level Yb:Ca 4 GdO(BO 3) 3 (Yb:GdCOB) laser emitting at 976 nm based on the F 5/2 2-F2 7/2 transition, generally used for a quasi-three-level emission at 1032 nm.