Title :
Coherent microwave emission without population inversion: a new atomic frequency standard
Author :
Godone, Aldo ; Levi, Filipo ; Vanier, Jacques
Author_Institution :
Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
fDate :
4/1/1999 12:00:00 AM
Abstract :
The description of a new type of frequency standard based on coherent population trapping (CPT) in cesium is given. The phenomenon creates a magnetization oscillating at the hyperfine frequency. Microwave radiation emitted by such a magnetization is detected by means of a microwave cavity. The process takes place without population inversion. Results are given for continuous and pulsed operation. The possibility of using the CPT coherent microwave emission as the basis of a frequency standard is analyzed
Keywords :
atomic clocks; caesium; frequency standards; microwave spectra; Cs; atomic frequency standard; coherent microwave emission; coherent population trapping; hyperfine frequency; magnetization oscillation; microwave cavity; Atom optics; Atomic clocks; Frequency; Laser excitation; Magnetization; Masers; Optical buffering; Optical pumping; Pump lasers; Stationary state;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
