Title :
Extension of the PTB frequency chain towards the Ca intercombination line at 657 nm
Author :
Schnatz, Harald ; Ohshima, Shin-Ichi ; Telle, H.R. ; Riehle, Fritz
Author_Institution :
Phys.-Tech. Bundesanstalt, Braunschweig, Germany
fDate :
4/1/1993 12:00:00 AM
Abstract :
In order to establish a frequency standard in the visible, the frequency of a dye laser, stabilized to the Ca intercombination line at λ=657 nm, has to be compared with the frequency of the primary standard of time and frequency. Relying on the existing frequency chain at PTB to the infrared, the realization of the missing intermediate frequency multiplication steps from a CO2 laser, phase locked to the Cs clock, to the Ca-stabilized dye laser is reported
Keywords :
calcium; dye lasers; frequency measurement; laser beam applications; laser frequency stability; measurement standards; optical frequency conversion; 657 nm; CO2 laser; Ca; Cs clock; IR; PTB frequency chain; dye laser; frequency multiplication; frequency standard; intercombination line; primary standard; visible range; Clocks; Frequency conversion; Frequency measurement; Laser stability; Measurement standards; Metrology; Power system harmonics; Pump lasers; Solid lasers; Spectroscopy;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
