Title :
Precision measurement of the hydrogen and deuterium 1S-2S transition with a phase locked laser frequency chain
Author :
Konig, W. ; Prevedelli, M. ; Onae, A. ; Andreae, T. ; Hansch, Theodor W.
Author_Institution :
Max-Planck-Inst. fur Quantenoptik, Garching bei Munchen, Germany
fDate :
June 27 1994-July 1 1994
Abstract :
To perform a fully phase coherent measurement of the hydrogen and deuterium 1S-2S frequency we have extended our laser frequency chain by four optical divider stages that are successively bisecting a remaining difference frequency of 1.1 THz down to 66.2 GHz for hydrogen (60.9 GHz for deuterium). The divided frequency can be counted directly by harmonic mixing on a Schottky-diode. As a result we expect an improved value for the Rydberg-constant and order of magnitude improvements in a measurement of the hydrogen-deuterium isotope-shift.<>
Keywords :
constants; deuterium; frequency measurement; hydrogen neutral atoms; isotope shifts; laser beam applications; laser frequency stability; laser mode locking; measurement standards; multiwave mixing; optical harmonic generation; 1.1 THz to 66.2 GHz; 1S-2S transition; D; H; Rydberg-constant; Schottky-diode; harmonic mixing; isotope-shift; laser frequency chain; optical dividers; phase locked laser frequency chain; precision measurement; Deuterium; Diode lasers; Frequency conversion; Hydrogen; Laser transitions; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical mixing; Phase measurement;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333404
