Pump-probe differencing technique for cavity-enhanced, noise-canceling saturation laser spectroscopy
Date
2004-11-10
Authors
De Vine, Glenn
McClelland, David E.
Close, John D.
Gray, Malcolm B.
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Abstract
We present an experimental technique enabling mechanical-noise free,
cavity-enhanced frequency measurements of an atomic transition and its
hyperfine structure. We employ the 532nm frequency doubled output from a Nd:YAG
laser and an iodine vapour cell. The cell is placed in a traveling-wave
Fabry-Perot interferometer (FPI) with counter-propagating pump and probe beams.
The FPI is locked using the Pound-Drever-Hall (PDH) technique. Mechanical noise
is rejected by differencing pump and probe signals. In addition, this
differenced error signal gives a sensitive measure of differential
non-linearity within the FPI.
Description
Keywords
Keywords: Demodulation; Frequencies; Mirrors; Neodymium lasers; Nonlinear optics; Pumping (laser); Spurious signal noise; Atomic transition; Folded ring cavity (FRC); Laser spectroscopy; Probe signals; Laser optics
Citation
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Source
Optics Letters
Type
Journal article