HOW ACCURATE IS OPTICAL 2ND-HARMONIC GENERATION

Authors
WYNANDS R COSTE O REMBE C MESCHEDE D
Citation
R. Wynands et al., HOW ACCURATE IS OPTICAL 2ND-HARMONIC GENERATION, Optics letters, 20(10), 1995, pp. 1095-1097
Citations number
5
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
20
Issue
10
Year of publication
1995
Pages
1095 - 1097
Database
ISI
SICI code
0146-9592(1995)20:10<1095:HAIO2G>2.0.ZU;2-T
Abstract
We have checked whether the frequency ratio between fundamental and se cond-harmonic optical frequencies is exactly 1:2 by measuring the freq uency difference between the second harmonics of two diode lasers and comparing it with the frequency difference of the fundamentals. We hav e improved the 30-year-old experimental limit on the accuracy of the 1 :2 frequency ratio by 7 orders of magnitude for frequency-dependent sh ifts to 2.3 parts in 10(13) for a KNbO3 crystal.