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Conference on Lasers and Electro-Optics

Excited-state optical filter at 532.33 nm based on optical rotary dispersion in potassium vapor

Grace Yang, Richard I. Billmers, Swapan Kumar Gayen, V.M. Contarino, Peter R. Herczfeld, M. Squicciarini, David M. Allocca

Published May 21, 1995• 0 citations
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A study of the potassium excited state Stark anomalous dispersion optical filter at 532.33 nm

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The potassium tunable excited state Stark anomalous dispersion optical filter (SADOF) at 532.33 nm was studied theoretically and experimentally. The theoretical model of SADOF was deduced and the transmission of SADOF was calculated. The transmission spectra of potassium SADOF in different electric fields were measured and the experimental frequency shifts of SADOF versus the strengths of the electric field were given. Furthermore, the comparison between the experimental results with the corresponding theoretically simulated results has been completed. The comparison shows that our experimental results agree with the theoretically simulated results in general.

Journal of Modern Optics•Apr 17, 2009•3 citations
In this paper the properties of an excited-state potassium Faraday anomalous dispersion optical filter in potassium vapor with a pump wavelength of 769.90 nm (i.e. 4S1/2-->4P1/2 transition) and a signal wavelength of 532 nm (i.e. 4P1/2-->8S1/2 transition) are calculated and discussed. The filter's transmissions versus the laser pump power and the external magnetic-field are obtained. The theoretical results show the transmission characteristics of the filter are relatively insensitive to the laser pump power and magnetic strength. The laser pump powers require range from 0.8 to 6 mW.cm-2. Our model predicts a peak transmission of 50% and an equivalent band-width of 4 GHz for the filter operating on the 4P1/2<--8S1/2 transition in potassium. The optical filter at 532 nm presented in this paper may be used to detect the practical and important frequency-doubled Nd:YAG laser.
The potassium tunable excited state Stark anomalous dispersion optical filter (SADOF) at 532.33 nm was studied theoretically and experimentally. The theoretical model of SADOF was deduced and the transmission of SADOF was calculated. The transmission spectra of potassium SADOF in different electric fields were measured and the experimental frequency shifts of SADOF versus the strengths of the electric field were given. Furthermore, the comparison between the experimental results with the corresponding theoretically simulated results has been completed. The comparison shows that our experimental results agree with the theoretically simulated results in general.