Title :
LPTF frequency synthesis chain: results and improvement for the near future
Author :
Touahri, D. ; Nez, F. ; Abed, M. ; Zondy, J.J. ; Acef, O. ; Hilico, L. ; Clairon, A. ; Millerioux, Y. ; Biraben, F. ; Julien, L. ; Felder, R.
Author_Institution :
LPTF/BNM, Obs. de Paris, Meudon, France
fDate :
4/1/1995 12:00:00 AM
Abstract :
We describe the modified LPTF frequency synthesis chain, which starts from the cesium referenced CO2/OsO4 laboratory standard. This chain, with variations, is able to cover the whole visible spectrum. A particular scheme is given in order to measure the 385.3-THz frequency of the two-photon transitions in rubidium. To secure the phase lock, the diode lasers´ linewidths have to be reduced. We report a 10-Hz beatnote linewidth obtained with two diode lasers stabilized on the same high-finesse cavity
Keywords :
caesium; carbon compounds; frequency measurement; gas lasers; laser frequency stability; laser tuning; measurement by laser beam; measurement standards; nonlinear optics; osmium compounds; 10 Hz; 385.3 THz; CO2-OsO4; CO2/OsO4 standard; Cs; Cs referenced CO2/OsO4 laboratory standard; LPTF frequency synthesis chain; Rb; beatnote linewidth; high-finesse cavity; two-photon transitions; visible spectrum; Diode lasers; Frequency measurement; Frequency synthesizers; Laser transitions; Laser tuning; Noise measurement; Nonlinear optics; Optical mixing; Particle measurements; Solid lasers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
