Title :
Absolute frequency measurement in mid infrared
Author :
Rovera, G.D. ; Acef, O. ; Clairon, A.
Author_Institution :
BNM-LPTF, Obs. de Paris, France
Abstract :
A brief description of the measurement chain linking the CO2 /OsO4 secondary frequency standard to the primary frequency standard is given. The measured frequency stability shows that the measurement system reaches the flicker floor of the secondary frequency standard, below the 10-14 level in 100 s. Results of a year of absolute frequency measurements of a CO2/OsO4 mid infrared secondary frequency standard are reported
Keywords :
carbon compounds; frequency standards; gas lasers; laser beams; laser frequency stability; laser variables measurement; osmium compounds; 1 y; 100 s; CO2; CO2-OsO4; CO2/OsO4 frequency standard; OsO4; absolute frequency measurement; absolute frequency measurements; flicker floor; frequency stability; measurement chain; measurement system; mid infrared region; mid infrared secondary frequency standard; primary frequency standard; secondary frequency standard; Frequency conversion; Frequency measurement; Frequency synthesizers; Masers; Measurement standards; Microwave oscillators; Phase measurement; Power harmonic filters; Schottky diodes; Stability;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.841388
