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2009 Advanced Laboratories Conference Abstract Detail Page

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Abstract Title: Atomic Spectroscopy in Alkali Vapor
Abstract: We present an advanced lab setup for atomic spectroscopy of alkali atoms in a vapor cell. External cavity diode lasers are used for excitation of the nS to nP transitions (D2 line). Laser absorption measurements of spectral line shapes and fitting are used to determine temperature and/ or pressure of the atomic system, at different vapor cell set temperatures. In the second part of the experiment the optical setup is rearranged to allow two counter-propagating beams through the vapor cell in order to perform Doppler-free saturated absorption spectroscopy measurements. The goal here is to observe and measure atomic hyperfine structure of the ground or excited state. The measurements can be performed with either potassium or cesium, depending on the choice (and availability) of the diode laser and the vapor cell.
Since the optics and lasers are used in laser cooling research, we will discuss aspects of successful integration of research and advanced lab instruction. This lab is important for the curriculum and is directly related to core course in quantum mechanics and a special topics course on introduction to atomic and molecular physics. Furthermore, an interesting extension of the lab setup would be to perform the measurements on second exited D2 transitions using 405 and 455 nm diode lasers for K and Cs, respectively.
Abstract Type: Poster
Contributed Poster: Download the Contributed Poster
Session: Session IX - Effective Experiments Poster Session

Author/Organizer Information

Primary Contact: Marin Pichler
Goucher College
1021 Dulaney Valley Road
Physics and Astronomy Department
Baltimore, MD 21204
Phone: 410-337-6328
Fax: 410-337-4048