Investigation of DUV generation for a Si quantum computer

ORAL

Abstract

Laser cooling and trapping of atoms in a magneto-optic trap (MOT) may be used as a source for depositing single silicon atoms with nanometer precision, which is required for making a scalable silicon quantum computer. A Si MOT requires a tunable, continuous wave laser at the cooling transition wavelength of 221.7 nm. Tens of mW are needed. Our scheme is to frequency double a Ti:Sapphire laser at 886.8 nm to 443.4 nm, then again to 221.7 nm. Resonant cavities are used to enhance the laser power. Mode matching into the cavity, phase matching in the crystal, and minimization of losses also improve efficiency. Theoretical predictions of optimal cavity parameters have been calculated. Values for crystal absorbance, walk-off, and waist size were used to predict second harmonic output power. Experimental results for the second harmonic generation will be presented.

–

Authors

  • David Fairbank

    Colorado State University

  • Seth Putterman

    Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287, USA, Department of Physics, Arizona State University, Tempe, AZ 85287, USA, College of Optical Sciences, University of Arizona, Colorado State University, University of Virginia, Auburn University, Northern Kentucky University, Utah Valley State College, Brigham Young University, Arizona State University, University of Amsterdam, New Mexico State university, University of Minesota, Pulse Field Facility, NHMFL, LANL, NM, Institute of Physics ASCR , Czech Republic, University of Minesota-Twin City, New Mexico State University, Director, Advanced Photon Source, Argonne National Lab, Australian Synchotron Source, Advanced Photon Source, Argonne National Lab, University of Arizona, U.S. Naval Research Laboratory, Wellesley College, Observatoire de Paris, France, Freie Universitat Berlin, Florida State Univ., Univ. Sci. Tech. China, Iowa State University, Lawrence Livermore National Laboratory, Mahabad Azad University, Carnegie Mellon University, Tempe Preparatory Academy, University of California, Los Angeles

  • Siu Au Lee

    Colorado State University