Measurement of Carrier-Envelope-Phase shifts using spectral interferometry with a broad frequency laser source |
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| Authors: | O. Gobert N. Fedorov O. Tcherbakoff J.F. Hergott M. Perdrix F. Lepetit D. Guillaumet M. Comte |
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| Affiliation: | 1. School of Marine Science and Technology, Tianjin University, Tianjin 300072, China;2. National Institute of Metrology, Beijing 100013, China;1. Central Aero-Hydrodynamics Institute named after Prof. N.E. Zhukovsky (TsAGI), Zhukovsky Moscow Region 140180 Russia;2. Mechanical Engineering Research Institute of the Russian Academy of Sciences, (IMASH RAN), 4 Maly Kharitonyevsky Pereulok, Moscow 101990 Russia.;1. CEITEC — Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic;2. Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlá?ská, 611 37 Brno, Czech Republic;3. Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic;4. Department of Mathematics and Physics, Faculty of Military Technology, University of Defence, Kounicova 65, 662 10 Brno, Czech Republic |
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| Abstract: | We investigate and analyze in detail an approach to measure Carrier Envelope Phase shifts by using spectral interferometry. The method which uses a broadband laser source is applied to the characterization of an Electro Optic Carrier Envelope Phase shifter and leads to quick and accurate measurements on a large frequency domain. The shifter is inserted in one arm of a Mach–Zehnder interferometer illuminated by a wide frequency spectrum coherent source. By carefully analyzing the observed fringes, we successfully derived, with a very good accuracy, the main useful parameters of the CEP shifter on the whole investigated wavelength spectrum. The laser source which delivers pulses with a Gaussian spatial distribution and a nearly flat spatial phase does not need to be CEP stabilized and no control of the spectral phase of the pulses is necessary. This has specific advantages compared to other methods. |
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