Conference »Quantum Physics of Nature« (QUPON 2005) Mitschnitt einer Veranstaltung der Fakultät für Physik der Universität Wien am Montag, dem 23. Mai 2005 im Großen Festsaal der Universität Wien Teil 19: Theodor W. Hänsch: A Passion for Precision. From the Ultrafast to the Ultraslow Abstract: Femtosecond laser optical frequency comb synthesizers have become the established tool for measuring the frequency of light with extreme precision. By permitting phase-coherent comparisons of optical and microwave frequencies, they can serve as the clockwork for ultraprecise optical atomic clocks. Applications to laser spectroscopy of atomic hydrogen permit stringent tests of basic laws of quantum physics. Such experiments can yield accurate values of fundamental constants, and they may reveal slow changes of fundamental constants with the evolution of the universe. Laser frequency comb techniques can also control the light phase of femtosecond laser pulses, thus advancing the frontier of ultrafast science from the femtosecond to the attosecond regime. High harmonic generation with intense femtosecond pulses may extend frequency comb techniques to the extreme ultraviolet and soft x-ray regime, conquering new territory for precision laser spectroscopy and fundamental measurements. Theodor W. Hänsch ist Direktor am Max-Planck-Institut für Quantenoptik in Garching bei München. INHALT ====== Kapitel Titel Position --------------------------------------------------------------------- 1. Vorspann 00:00:00 2. Introduction 00:00:09 3. The hydrogen cold atomic beam 00:05:29 4. Optical frequency comb synthesizer 00:07:41 5. Single laser frequency comb synthesizer 00:14:50 6. Hydrogen 1S-2S frequency 00:20:57 5. Towards a better Rydberg constant? 00:26:43 6. Questions from the ausience 00:30:56

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