Towards Quantum Amplification by Superradiant Emission of Radiation

ORAL

Abstract

Atomic coherence effect has revealed many fascinating phenomena. Recently, our group proposed a new amplification mechanism which requires no population in excited state yet light amplification at high frequency can be achieved by the parametric resonance between the driving field and the collective superradiant oscillations of the atomic coherence, thus named Quantum Amplification by Superradiant Emission of Radiation (QASER). To get enough gain, QASER requires high atomic density and a strong driving field. In order to observe this effect, we experimentally study the optical properties of dense Rubidium vapor which is strongly pumped by nanosecond laser pulses. Experiments were done with two different setups: (1) heated rubidium cell pumped by tunable pulsed laser and (2) rubidium heatpipe pumped by 1064 nm pulses from Nd:YAG laser. We observed possible coherent emissions in these systems. We also analyze some effects that could hinder the observation of QASER.

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Authors

  • Zhenhuan Yi

    Texas A\&M University, College Station, TX 77843, USA

  • Matthew Morrison

    Texas A\&M University, College Station, TX 77843, USA

  • Chris O'Brien

    Texas A\&M University, Texas A\&M University, College Station, TX 77843, USA

  • Charles Ballmann

    Texas A\&M University, College Station, TX 77843, USA

  • Jonathan Thompson

    Texas A\&M University, College Station, TX 77843, USA

  • Alexei Sokolov

    Texas A\&M University, Baylor University, Texas A\&M University and Baylor University, None, Baylor University, Texas A\&M University, and Princeton University, Texas A\&M University, Texas A\&M University, College Station, TX 77843, USA, Texas A&M University

  • Gombojav Ariunbold

    assistant research professor, Texas A\&M University, College Station, TX 77843, USA; National University of Mongolia, Ulaanbaatar 210646, Mongolia

  • Marlan Scully

    Texas A\&M University, Princeton University, Baylor University, Texas A\&M University, College Station, TX 77845, Texas A\&M University, Baylor University and Princeton University, None, professor, Baylor University, Texas A\&M University, and Princeton University, Texas A\&M University, College Station, TX 77843, USA; Princeton University, Princeton, NJ 08544, USA; Baylor University, Waco, TX 76798, USA, Texas A\&M University, Princeton, and Baylor University, Texas A\&M University, Texas A\&M Univ