A Traveling Michelson Interferometer with Phase-Locked Fringe Interpolation
| Author | |
|---|---|
| Abstract |
The advent of single-mode cw dye lasers and their application to Doppler-free spectroscopy makes essential the capability of rapidly measuring the dye laser s wavelength with sub-Doppler absolute accuracy. Our wavelength measuring apparatus [1] is basically an automatic-scanning Michelson interferometer utilizing corner-cube retroreflectors, with phase multiplication for extending the resolution. The interferometer measures an unknown wavelength in terms of a reference laser wavelength. Motion of the carriage holding the corner-cubes lengthens one arm and shortens the other arm of this interferometer. For a given distance traveled by the carriage, a different number of fringes will be counted for the unknown laser and the reference laser (since their wavelengths are different). Naturally, a higher resolution level for the measured wavelength will require a longer travel, and consequently, a longer measuring time. Our resolution-extension concept, however, enables us to obtain wavelength information of a given resolution level in 100-fold less time than is required with direct fringe counting. |
| Year of Conference |
1977
|
| Start Page or Article ID |
421-422
|
| Publisher |
Springer Berlin Heidelberg
|
| Conference Location |
Berlin, Heidelberg
|
| ISBN Number |
978-3-540-35968-5
|
| DOI |
10.1007/978-3-540-35968-5_51
|
| Download citation | |
| Publication Status | |
| JILA PI | |
| JILA Topics | |
Conference Proceedings
|
The Physics Frontiers Centers (PFC) program supports university-based centers and institutes where the collective efforts of a larger group of individuals can enable transformational advances in the most promising research areas. The program is designed to foster major breakthroughs at the intellectual frontiers of physics by providing needed resources such as combinations of talents, skills, disciplines, and/or specialized infrastructure, not usually available to individual investigators or small groups, in an environment in which the collective efforts of the larger group can be shown to be seminal to promoting significant progress in the science and the education of students. PFCs also include creative, substantive activities aimed at enhancing education, broadening participation of traditionally underrepresented groups, and outreach to the scientific community and general public.