Frequency comparison and absolute frequency measurement of I2-stabilized lasers at 532 nm
| Autor: | Th. Udem, Harald Schnatz, J. von Zanthier, R. Holzwarth, S. N. Bagayev, A. Yu. Nevsky, F. Riehle, Herbert Walther, Theodor W. Hänsch, P. V. Pokasov, J. Reichert, Mikhail N Skvortsov |
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| Rok vydání: | 2001 |
| Předmět: |
Materials science
business.industry Laser science Laser Atomic and Molecular Physics and Optics Atomic clock Electronic Optical and Magnetic Materials law.invention Frequency comb Optics law Femtosecond Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy business Hyperfine structure Fabry–Pérot interferometer |
| Zdroj: | Optics Communications. 192:263-272 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/s0030-4018(01)01190-7 |
| Popis: | We present a frequency comparison and an absolute frequency measurement of two independent I2-stabilized frequency-doubled Nd:YAG lasers at 532 nm, one set up at the Institute of Laser Physics, No vosibirsk, Russia, the other at the Physikalisch-Technische Bundesanstalt, Braunschweig, Germany. The absolute frequency of the I2-stabilized lasers was determined using a CH4-stabilized He-Ne laser as a reference. This laser had been calibrated prior to the measurement by an atomic cesium fountain clock. The frequency chain linking phase-coherently the two frequencies made use of the frequency comb of a Kerr-lens mode-locked Ti:sapphire femtosecond laser where the comb mode separation was controlled by a local cesium atomic clock. A new value for the R(56)32-0:a10 component, recommended by the Comite International des Poids et Mesures (CIPM) for the realization of the metre [1], was obtained with reduced uncertainty. Absolute frequencies of the R(56)32-0 and P(54)32-0 iodine absorp tion lines together with the hyperfine line separations were measured. |
| Databáze: | OpenAIRE |
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