Optical Metrology of Magnetically Trapped Hydrogen
Abstract
Our goal is to carry out ultra precise laser spectroscopy on trapped atomic hydrogen in the microkelvin regime, and to develop methods for measuring the 1S-2S transition frequency. The major effort during this past year was to perfect methods for carrying out ultraviolet laser spectroscopy in our cold hydrogen trap. We carried out extensive investigations on the absorption of UV light in various window materials, achieving values of a few percent. In addition, we developed a new method for dealing with the heat deposited in the window by controlling the helium film that lines the low temperature cell in which the experiment is carried out. Other accomplishments include the development of improved instrumentation for spatially stabilizing and amplitude modulating the 243 nm laser beam, and improvements in the frequency control of the laser system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 19, 1993
- Accession Number
- ADA272110
Entities
People
- Daniel Kleppner
Organizations
- Massachusetts Institute of Technology