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Title: Laser frequency stabilization using bichromatic crossover spectroscopy

Abstract

We propose a Doppler-free spectroscopic method named bichromatic crossover spectroscopy (BCS), which we then use for the frequency stabilization of an off-resonant frequency that does not correspond to an atomic transition. The observed BCS in the 5S{sub 1/2} → 5P{sub 1/2} transition of {sup 87}Rb is related to the hyperfine structure of the conventional saturated absorption spectrum of this transition. Furthermore, the Doppler-free BCS is numerically calculated by considering all of the degenerate magnetic sublevels of the 5S{sub 1/2} → 5P{sub 1/2} transition in an atomic vapor cell, and is found to be in good agreement with the experimental results. Finally, we successfully achieve modulation-free off-resonant locking at the center frequency between the two 5S{sub 1/2}(F = 1 and 2) → 5P{sub 1/2}(F′ = 1) transitions using a polarization rotation of the BCS. The laser frequency stability was estimated to be the Allan variance of 2.1 × 10{sup −10} at 1 s.

Authors:
;  [1]
  1. Department of Physics, Pusan National University, Busan 609-735 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22413197
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION SPECTRA; ENERGY-LEVEL TRANSITIONS; HYPERFINE STRUCTURE; LASER RADIATION; MODULATION; P STATES; POLARIZATION; ROTATION; RUBIDIUM 87; S STATES; STABILIZATION; VAPORS

Citation Formats

Jeong, Taek, and Seb Moon, Han, E-mail: hsmoon@pusan.ac.kr. Laser frequency stabilization using bichromatic crossover spectroscopy. United States: N. p., 2015. Web. doi:10.1063/1.4913880.
Jeong, Taek, & Seb Moon, Han, E-mail: hsmoon@pusan.ac.kr. Laser frequency stabilization using bichromatic crossover spectroscopy. United States. doi:10.1063/1.4913880.
Jeong, Taek, and Seb Moon, Han, E-mail: hsmoon@pusan.ac.kr. Sat . "Laser frequency stabilization using bichromatic crossover spectroscopy". United States. doi:10.1063/1.4913880.
@article{osti_22413197,
title = {Laser frequency stabilization using bichromatic crossover spectroscopy},
author = {Jeong, Taek and Seb Moon, Han, E-mail: hsmoon@pusan.ac.kr},
abstractNote = {We propose a Doppler-free spectroscopic method named bichromatic crossover spectroscopy (BCS), which we then use for the frequency stabilization of an off-resonant frequency that does not correspond to an atomic transition. The observed BCS in the 5S{sub 1/2} → 5P{sub 1/2} transition of {sup 87}Rb is related to the hyperfine structure of the conventional saturated absorption spectrum of this transition. Furthermore, the Doppler-free BCS is numerically calculated by considering all of the degenerate magnetic sublevels of the 5S{sub 1/2} → 5P{sub 1/2} transition in an atomic vapor cell, and is found to be in good agreement with the experimental results. Finally, we successfully achieve modulation-free off-resonant locking at the center frequency between the two 5S{sub 1/2}(F = 1 and 2) → 5P{sub 1/2}(F′ = 1) transitions using a polarization rotation of the BCS. The laser frequency stability was estimated to be the Allan variance of 2.1 × 10{sup −10} at 1 s.},
doi = {10.1063/1.4913880},
journal = {Journal of Applied Physics},
number = 9,
volume = 117,
place = {United States},
year = {Sat Mar 07 00:00:00 EST 2015},
month = {Sat Mar 07 00:00:00 EST 2015}
}