Document Type
Article
Publication Date
3-18-2013
Abstract
Photoionization of Cs (6p 2P3/2) atoms during the operation of a Cs D2 line (852.1 nm: 6p 2P3/2→6s 2S1/2) laser, pumped by free→free transitions of thermal Cs-Ar ground state pairs, has been investigated experimentally and computationally. Photoexcitation of Cs vapor/Ar mixtures through the blue satellite of the D2 transition (peaking at 836.7 nm) selectively populates the 2P3/2 upper laser level by the dissociation of the CsAr excited complex. Comparison of laser output energy data, for instantaneous pump powers up to 3 MW, with the predictions of a numerical model sets an upper bound of 8 × 10−26 cm4 W−1 on the Cs (6p 2P3/2) two photon ionization cross-section at 836.7 nm which corresponds to a single photon cross-section of 2.4 × 10−19 cm2 for a peak pump intensity of 3 MW cm−2.
Source Publication
Applied Physics Letters
Recommended Citation
J. D. Hewitt, T. J. Houlahan, J. E. Gallagher, D. L. Carroll, A. D. Palla, J. T. Verdeyen, G. P. Perram, J. G. Eden; Role of excited state photoionization in the 852.1 nm Cs laser pumped by Cs-Ar photoassociation. Appl. Phys. Lett. 18 March 2013; 102 (11): 111104. https://doi.org/10.1063/1.4796040
Comments
© 2013 AIP Publishing LLC, published under an exclusive license with American Institute of Physics.
AFIT Scholar, as the repository of the Air Force Institute of Technology, furnishes the published Version of Record for this article in accordance with the sharing policy of the publisher, AIP Publishing. A 12-month embargo was observed.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Applied Physics Letters 102: 1111104. as fully cited below and may be found at DOI: 10.1063/1.4796040.