Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).

View the beta site
NIST logo

Publication Citation: Polarization Enhanced Absorption Spectroscopy for Laser Stabilization"

NIST Authors in Bold

Author(s): Paul D. Kunz; Thomas P. Heavner; Steven R. Jefferts;
Title: Polarization Enhanced Absorption Spectroscopy for Laser Stabilization"
Published: November 15, 2013
Abstract: We demonstrate a variation of pump-probe spectroscopy that is particularly useful for laser frequency stabilization. This polarization enhanced absorption spectroscopy (POLEAS) signal provides a significant improvement in signal-to-noise ratio over saturated absorption spectroscopy (SAS) for the important and commonly used atomic cycling transitions. The improvements can directly increase the short-term stability of a laser frequency-lock, given sufficient servo loop bandwidth. The long-term stability of the POLEAS method, which is limited by environmental sensitivities, is comparable to SAS. The POLEAS signal is automatically Doppler-free, without requiring a separate Doppler subtraction beam, and lends itself to straight-forward compact packaging. Finally, by increasing the amplitude of the desired (cycling) peak while reducing the amplitude of all other peaks in the manifold, the POLEAS method eases the implementation of laser auto-locking schemes.
Citation: Applied Optics
Volume: 52
Issue: 33
Pages: pp. 8048 - 8053
Keywords: Laser Stabilization,Polarization,Spectroscopy
Research Areas: Physics