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Generation of 656 nm coherent red-light by frequency-doubled Nd:YLiF4/β-BaB2O4 laser for a compact silver atoms optical clock

Published online by Cambridge University Press:  26 September 2012

J.-P. Loisel ,
S. Topsu ,
L. Chassagne ,
Y. Alayli ,
P.R. Dahoo  and
P. Juncar
J.-P. Loisel
Affiliation:
LISV, University of Versailles, 78035 Versailles, France
S. Topsu*
Affiliation:
LISV, University of Versailles, 78035 Versailles, France
L. Chassagne
Affiliation:
LISV, University of Versailles, 78035 Versailles, France
Y. Alayli
Affiliation:
LISV, University of Versailles, 78035 Versailles, France
P.R. Dahoo
Affiliation:
CNRS/Insu LATMOS-IPSL, University of Versailles, 78280 Guyancourt, France
P. Juncar
Affiliation:
LNE-INM/CNAM, 93210 Saint-Denis, France
*
⋆ Correspondence: suat.topsu@uvsq.fr
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Abstract

We describe an efficient continuous-wave diode-pumped Nd:YLiF4 laser oscillating on the σ-polarized 4F3/2-4I13/2 transition at λω = 1312 nm. With a simple linear cavity laser, we reached an intracavity power of 310 W at λ = 1312 nm for 16 W of absorbed pump power (λp ~ 806 nm). A 0.25 W of tunable radiation (λ2ω = 656−658 nm) was obtained by intracavity second-harmonic generation (SHG) with a 5 × 5 × 7 mm3β-BaB2O4 crystal. Up to 10 mW of tunable single-frequency operation was observed using a 200 μm thin fused silica intracavity solid etalon. The optimal waist for a maximum conversion efficiency has been calculated theoretically using Boyd and Kleiman model. For the 1312–656 nm SHG, we found a walk-off parameter B = 8.99 and an optimal waist of 25 μm. Comparing to the experimental measurement of the optimal waist, we found a relative discrepancy of 2.84 × 10-2. This laser is dedicated to the spectroscopic study of silver atoms trapped in a buffer-gas-free paraffin coated Pyrex cell that will be used in a compact atomic optical clock.

Keywords

Laseroptical clockspectroscopicdiode-pumped solid-stage
Type
Research Article
Information
International Journal of Metrology and Quality Engineering , Volume 3 , Issue 1 , 2012 , pp. 7 - 13
Copyright
© EDP Sciences 2012

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