A laser spectroscopy system with combined absorption, polarization rotation and fluorescence detection to study two photon transitions in atomic rubidium

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Oscar López-Hernández
Santiago Hernández-Gómez
Francisco Sebastián Ponciano-Ojeda
Cristian Mojica-Casique
Ricardo Colín-Rodríguez
Jesús Flores-Mijangos
Daniel Sahagún
Fernando Ramírez-Martínez
José Jiménez-Mier

Abstract

The design and construction of an experimental system for studying two photon spectroscopy processes in atomic rubidium is presented. It is designed to measure absorption and polarization rotation induced by any of the two laser beams and also the visible fluorescence that results from decay of the excited states. Two home-built diode lasers are used to produce the optical fields that later interact with room temperature rubidium atoms. Using counterpropagating beams allows velocity selection of the groups of atoms that interact with both laser beams. The system was tested in the 5 S→5 P3/2 →5 Dj ladder energy level configuration of atomic rubidium. Blue fluorescence (420 nm) that results from decay of the intermediate 6Pj states is filtered and then measured with a photomultiplier tube. Absorption and fluorescence spectra provide mutually complementary information about the interaction between the rubidium atoms and the two optical fields. All Rights Reserved © 2015 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico. This is an open access item distributed under the Creative Commons CC License BY-NC-ND 4.0.

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How to Cite
López-Hernández, O., Hernández-Gómez, S., Ponciano-Ojeda, F. S., Mojica-Casique, C., Colín-Rodríguez, R., Flores-Mijangos, J., Sahagún, D., Ramírez-Martínez, F., & Jiménez-Mier, J. (2015). A laser spectroscopy system with combined absorption, polarization rotation and fluorescence detection to study two photon transitions in atomic rubidium. Journal of Applied Research and Technology, 13(6). https://doi.org/10.22201/icat.16656423.2015.13.6.63