Počet záznamů: 1

The femtosecond optical synthesizer as a too! for determination of the refractive index of air in ultra-precise measurement of lengths

  1. 1.
    0335629 - UPT-D 2010 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
    Číp, Ondřej - Šmíd, Radek - Mikel, Břetislav - Čížek, Martin - Růžička, Bohdan - Lazar, Josef
    The femtosecond optical synthesizer as a too! for determination of the refractive index of air in ultra-precise measurement of lengths.
    Fringe 2009 - 6th International Workshop on Advanced Optical Metrology. Heidelberg: Springer, 2009, s. 269-274. ISBN 978-3-642-03050-5.
    [Fringe 2009 - International Workshop on Advanced Optical Metrology /6./. Nürtinger (DE), 13.09.2009-16.09.2009]
    Grant CEP: GA MŠk(CZ) LC06007; GA MŠk 2C06012; GA MPO 2A-1TP1/127; GA MPO FT-TA3/133; GA MPO 2A-3TP1/113; GA ČR GA102/09/1276; GA ČR GA102/07/1179
    Výzkumný záměr: CEZ:AV0Z20650511
    Klíčová slova: femtosecond optical synthesizer * measurement of lengths * laser interferometer
    Kód oboru RIV: BH - Optika, masery a lasery

    The progress in the field of optical frequency standards is oriented to femtosecond mode-lock lasers stabilized by a technique of the optical frequency comb. Such a laser produces a supercontinuum light, which is composed of a cluster of coherent frequency components in certain interval of wavelengths. A value of the repetition rate (frequency) of femtosecond pulses determines (in the frequency domain) spacing of these coherent components. If we control the mode-lock laser by means of i.e. atomic clocks we ensure frequency of these components very stable. The comb spectrum plays a role as a frequency rule which is suitable for the metrology of length in various branches: it can be used as a tool for generation of precise distance and at the same time as a length measuring device with the atomic clock as the fundamental reference.
    Trvalý link: http://hdl.handle.net/11104/0180039