Title :
BIPM activities related to realization of the definition of the metre
Author :
Chartier, J.-M. ; Chartier, A. ; Felder, R. ; Goebel, R. ; Labot, J. ; Picard, S. ; Robertsson, L. ; Vitushkin, L. ; Zarka, A.
Author_Institution :
Bur. Int. des Poids et Mesures, Sevres, France
Abstract :
The results are presented of frequency comparisons of laser radiations at /spl lambda//spl ap/3.39 /spl mu/m, /spl lambda//spl ap/633 nm, and /spl lambda//spl ap/515 nm used for the realization of the metre. Work on lasers at /spl lambda/=532 nm, recently recommended by the CIPM, and on iodine-stabilized extended-cavity diode laser at 633 nm are described. Activities in gravimetry and in nanometrology are also presented.
Keywords :
length measurement; measurement by laser beam; units (measurement); 3.39 micron; 515 nm; 633 nm; BIPM; CIPM; frequency measurement; gravimetry; iodine stabilized extended cavity diode laser; laser radiation; metre definition; nanometrology; Contamination; Current measurement; Diode lasers; Frequency measurement; Laboratories; Laser stability; NIST; Pollution measurement; Reproducibility of results; Wavelength measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699914
