Department of Chemistry, University of California, Davis, CA 95616, USA.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Apr;75(4):1211-7. doi: 10.1016/j.saa.2009.12.013. Epub 2009 Dec 21.
Cavity ring-down spectroscopy is used to probe the optical absorption of the optical pseudo-two level system [Xe]4f(13) Yb(3+) in room temperature solution, a situation where the two-color pump-probe luminescence approach commonly used to study the other [Xe]4f(n) (2 < or = n < or = 12) trivalent lanthanide ions fails. A 1m optical cavity constructed from two highly reflective mirrors is used to obtain ring-down signals as a function of wavelength from 1 mL samples contained in a quartz cuvette placed in the center of the cavity. Absorption spectra constructed from these signals characteristic of the (6)H(15/2)-->(4)F(9/2) [Xe]4f(5) Dy(3+) and the (7)F(0)-->(5)D(0) [Xe]4f(6) Eu(3+) transitions are presented and compared to the corresponding single pass absorption and two-color pump-probe luminescence spectra to obtain sensitivity estimates. Finally the spectrum for the (2)F(5/2)-->(2)F(7/2) [Xe]4f(13) Yb(3+) transition for a model Yb(3+) complex in room temperature solution is obtained using cavity ring-down spectroscopy for the first time.
腔衰荡光谱用于探测室温溶液中光学拟二能级系统[Xe]4f(13)Yb(3+)的光吸收，在这种情况下，通常用于研究其他[Xe]4f(n)（2≦n≦12）三价镧系离子的双色泵浦探测发光方法失效。一个 1m 光学腔由两个高反射镜组成，用于从放置在腔中心的石英比色皿中 1mL 样品的波长获得衰荡信号。从这些信号构建的吸收光谱特征是（6）H(15/2)-->(4)F(9/2)[Xe]4f(5)Dy(3+)和（7）F(0)-->(5)D(0)[Xe]4f(6)Eu(3+)跃迁，并与相应的单通吸收和双色泵浦探测发光光谱进行比较，以获得灵敏度估计。最后，首次使用腔衰荡光谱获得了室温溶液中模型 Yb(3+)配合物的（2）F(5/2)-->(2)F(7/2)[Xe]4f(13)Yb(3+)跃迁的光谱。
