Direct frequency measurement of iodine-stabilised frequency-doubled Nd:YAGlasers at /spl lambda/=532 nm

Author

Schnatz, H. ; Riehle, F. ; Nevsky, A. ; Holzwarth, R. ; Reichert, J. ; Udem, T. ; Hansch, T.W. ; von Zanthier, J. ; Walther, H. ; Pokasov, P. ; Skvortsov, M. ; Bagayev, S.

Author_Institution

Phys. Tech. Bundesanstalt, Braunschweig, Germany

fYear

2000

fDate

14-19 May 2000

Firstpage

673

Lastpage

674

Abstract

We have determined the frequency of the a/sub 1/ component of the P(54)32-0 transition of molecular iodine with an estimated relative standard uncertainty below 1/spl middot/10/sup -11/ using a phase-coherent optical frequency chain from the CH/sub 4/ frequency standard to the visible. This allows the realisation of the meter by visible frequencies with an uncertainty reduced by more than one order of magnitude compared to previous measurements (1999).

Keywords

frequency standards; iodine; measurement by laser beam; neodymium; yttrium compounds; 532 nm; CH/sub 4/ frequency standard; I/sub 2/; I/sub 2/ stabilised frequency-doubled Nd:YAG- lasers; Nd:YAG; Nd:YAl5O12; direct frequency measurement; phase-coherent optical frequency chain; relative standard uncertainty; visible frequencies; Atom lasers; Atom optics; Frequency estimation; Frequency measurement; Laser mode locking; Laser noise; Laser stability; Laser theory; Laser transitions; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 2000 Conference on

Conference_Location

Sydney, NSW, Australia

Print_ISBN

0-7803-5744-2

Type

conf

DOI

10.1109/CPEM.2000.851191

Filename

851191