Laser Induced Asymmetry and Inhomogeneous Broadening of the Microwave Lineshape of a Gas Cell Atomic Frequency Standard
Abstract
Recently, there has been interest in the possibility of replacing the rf discharge lamp in a rubidium gas cell clock with a single mode laser diode. Since the short term stability of the rubidium frequency standard is limited by the shot noise of the photodetector, an increased signal-to-noise ratio due to more efficient laser diode optical pumping might improve the short term performance. Because the emission wavelength of the laser diode can be tuned, improved long term performance dcould be gained through the control of the light shift effect. However, due to the nature of the gas cell frequency standard, various physical phenomena are strongly coupled in their effect on the frequency output, and thus careful consideration must be given to any change in one parameter because of its interrelation with other parameters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1982
- Accession Number
- ADA497671
Entities
People
- C. H. Volk
- James C. Camparo
- Robert P. Frueholz
Organizations
- The Aerospace Corporation