Intensity Modulation of Transmitted Light at the Ground State Hyperfine Frequency of POTASSIUM-39.

M. I. Dyakonov

Arthur H. Firester, Thomas R. Carver

This paper discusses intensity modulation of transmitted light at 462 MHz due to coherence between sublevels of the ${\mathrm{K}}^{39}$ ground state. A concise theory of transmitted-light modulation is presented, using the density-matrix and monitoring-operator formalism. The theory and construction of an ultrahigh-frequency photodetection system is described. The auxiliary apparatus is also described, together with experimental conditions under which signals have been observed. It is suggested that a possible application of this technique is a wide-range magnetometer.

P. Buck

Arthur H. Firester, Thomas R. Carver

Received 13 September 1966DOI:https://doi.org/10.1103/PhysRevLett.17.947©1966 American Physical Society

T. Yabuzaki, T. Mitsui, U. Tanaka

A phenomenon observed in a simple experiment with a diode laser is found to be a basis for powerful spectroscopy. In this spectroscopy, the laser frequency is neither scanned nor modulated. High-resolution spectra in a wide ratio-frequency range, such as Zeeman and hyperfine spectra in both of the ground and the excited states, are observed simultaneously by frequency analyzing the intensity fluctuation of the light transmitted through a sample cell. Demonstrating experiments are carried out with respect to the ${\mathit{D}}_{1}$ and ${\mathit{D}}_{2}$ lines of Cs and Rb atoms.

Nancy J. Halas