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ERIC Number: EJ851814
Record Type: Journal
Publication Date: 2009-Sep
Pages: 14
Abstractor: As Provided
Reference Count: 29
ISSN: ISSN-0143-0807
Nonlinear Spectroscopy of Rubidium: An Undergraduate Experiment
Jacques, V.; Hingant, B.; Allafort, A.; Pigeard, M.; Roch, J. F.
European Journal of Physics, v30 n5 p921-934 Sep 2009
In this paper, we describe two complementary nonlinear spectroscopy methods which both allow one to achieve Doppler-free spectra of atomic gases. First, saturated absorption spectroscopy is used to investigate the structure of the 5S[subscript 1/2] [right arrow] 5P[subscript 3/2] transition in rubidium. Using a slightly modified experimental setup, Doppler-free two-photon absorption spectroscopy is then performed on the 5S[subscript 1/2] [right arrow] 5D[subscript 5/2] transition in rubidium, leading to accurate measurements of the hyperfine structure of the 5D[subscript 5/2] energy level. In addition, electric dipole selection rules of the two-photon transition are investigated, first by modifying the polarization of the excitation laser, and then by measuring two-photon absorption spectra when a magnetic field is applied close to the rubidium vapour. All experiments are performed with the same grating-feedback laser diode, providing an opportunity to compare different high-resolution spectroscopy methods using a single experimental setup. Such experiments may acquaint students with quantum mechanics selection rules, atomic spectra and Zeeman effect. (Contains 2 footnotes and 8 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A