Chinese Optics Letters, 2018, 16 (3): 033001, Published Online: Jul. 13, 2018
Excited-state population distributions of alkaline-earth metal in a hollow cathode lamp Download: 765次
Abstract
The intensities of fluorescence spectral lines of Ca atoms and Sr atoms in two different hollow cathode lamps (HCLs) are measured by element-balance-detection technology. In the wavelength range of 350–750 nm in the visible spectral region, using the individual strongest line (Ca 422.67 nm, Sr 460.73 nm) as the bench mark, the population ratios between the excited states of Ca atoms and Sr atoms are calculated by rate equations and the spontaneous transition probabilities. The HCLs with populations at excited states can be used to realize the frequency stabilization reference of the laser frequency standard.
Pengyuan Chang, Bo Pang, Yisheng Wu, Jingbiao Chen. Excited-state population distributions of alkaline-earth metal in a hollow cathode lamp[J]. Chinese Optics Letters, 2018, 16(3): 033001.