A cesium beam atomic clock using laser optical pumping. Preliminary tests

A cesium beam atomic clock using laser optical pumping. Preliminary tests

2014 A passive microwave cesium beam resonator utilizing optical pumping with a C.W. narrowband tunable laser (here, a GaAs laser) has been realized. A population difference between the levels of the ground state hyperfine transition of 133Cs (at 9 192.631... MHz) is achieved by optical pumping with the GaAs laser; the microwave resonance is detected through a change in the intensity of the flu...

Observation of optical pumping effects in collinear atomic beam - laser beam(s) interaction

2014 The detection of optical resonances by observation of the fluorescence light emitted from a fast atomic beam of Na interacting with a collinear laser beam is limited in sensitivity by optical pumping processes. In the experiment reported here, we take advantage of the optical pumping by using a second collinear laser beam, achieving then a gain in fluorescence signal. The effects of the la...

Optical pumping of a lithium atomic beam for atom interferometry

Semiconductor laser excitation of Ramsey fringes by using a Raman transition in a cesium atomic beam

Recently there has been interest in the use of the laser slowed and trapped atoms for the development of high-accuracy atomic clocks.'` For slow-atom clocks, employing separated field excitation, the use of a Raman transition may have advantages over direct microwave excitation.4 6 This is because the two-zone Raman interaction has the demonstrated ability to reverse the sign of the ac Stark sh...

Cesium Beam Atomic Time and Frequency Standards

In recognition of the 0ct)ober 1964 declaration of the International Committee of Weights and Measures that the physical measurement of time be based on a particular transition between two hyperfine levels in the ground state of cesium 133, a review of the characteristics of cesium beam atomic frequency standards is presented. This article discusses the general requirements for frequency and ti...