Darmstadt 2008 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 50: Poster Ultrakalte Atome
Q 50.7: Poster
Thursday, March 13, 2008, 16:30–19:00, Poster C2
Ultra-cold Strontium atoms in 1-D optical lattice for optical frequency metrology — •Joseph Sundar Raaj Vellore Winfred, Thomas Legero, Christian Lisdat, Fritz Riehle, and Uwe Sterr — Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
Recent advancement in optical frequency metrology promises to measure time with a fractional accuracy of 10−17. Such precise measurement of time is very important in technological and scientific endeavors. With a narrow transition linewidth of about 1 mHz and the existence of the magic wavelength in the NIR region for optical traps leading to cancellation of AC stark shift of the clock transition, strontium is an attractive candidate for such an optical clock. We report preliminary results of our Strontium optical clock experiment. 88Sr atoms are cooled down to ultra cold temperature regime(∼ 1 µK) and trapped in a 1-D optical lattice with a potential depth around 120 µK. Details of our experimental set up, characterization of atoms in the 1-D optical lattice with respect to different trap parameters and the status of spectroscopy of the magnetic field induced 1S0-3P0 clock transition will be presented.