2012 BFY Abstract Detail Page

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Abstract Title: A Simple Scanning Fabry-Perot Interferometer for High-Resolution Spectroscopy Experiments
Abstract: The Fabry-Perot interferometer is a useful tool for high-resolution spectroscopy experiments and can be investigated as an interesting system in its own right and for understanding the physics of lasers.  We describe an easy-to-build scanning Fabry-Perot interferometer using inexpensive, commercially available parts.  By using low-cost, off-the-shelf beamsplitter mirrors in the interferometer, we greatly reduce the inconvenience or expense of a custom mirror fabrication.  We find that the instrumental finesse is limited less by low mirror reflectivity than by flatness considerations, which can be mitigated by restricting the instrument's aperture.  We find a typical finesse around 8-9, which is sufficient for many experiments.  As examples, results are presented showing measurement of the instrumental profile and the wavelength of helium-neon laser light, and measurement of the Zeeman splitting in mercury, a standard high-resolution spectroscopy experiment.
Abstract Type: Poster
Contributed Poster: Download the Contributed Poster

Author/Organizer Information

Primary Contact: Thomas Moses
Knox College
Dept. of Physics, K-56
2 E. South Street
Galesburg, IL 61401
Phone: 309-341-7341