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arXiv · 1407.0075

A Laser Interferometer for the Undergraduate Teaching Laboratory Demonstrating Picometer Sesitivity

Kenneth G. Libbrecht·Eric D. Black
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Abstract

We describe a laser interferometer experiment for the undergraduate teaching laboratory that achieves picometer sensitivity in a hands-on table-top instrument. In addition to providing an introduction to interferometer physics and optical hardware, the experiment also focuses on precision measurement techniques including servo control, signal modulation, phase-sensitive detection, and different types of signal averaging. After students assemble, align, and characterize the interferometer, they then use it to measure nanoscale motions of a simple harmonic oscillator system, as a substantive example of how laser interferometry can be used as an effective tool in experimental science.

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Kenneth G. Libbrecht, Eric D. Black. 2014-06-30. A Laser Interferometer for the Undergraduate Teaching Laboratory Demonstrating Picometer Sesitivity. https://doi.org/10.1119/1.4901972

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