Directional coherent light via intensity-induced sideband emission

Andrew J Traverso; Chris O'Brien; Brett H Hokr; Jonathan V Thompson; Luqi Yuan; Charles W Ballmann; Anatoly A Svidzinsky; Georgi I Petrov; Marlan O Scully; Vladislav V Yakovlev

doi:10.1038/lsa.2016.262

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Directional coherent light via intensity-induced sideband emission

Original Articles

- Directional coherent light via intensity-induced sideband emission
- Light: Science & Applications Vol. 6, Issue 2, (2017)
- Affiliations：
  
  1.Texas A&M University, College Station, TX 77843, USA
  2.Princeton University, Princeton, NJ 08544, USA
  3.Baylor University, Waco, TX 76798, USA
- Author bio：
  
  V Yakovlev, Email: yakovlev@tamu.edu
- Funds：
- DOI：10.1038/lsa.2016.262
  CLC：
- Published：2017-06，
  
  Published Online：05 December 2016，
  
  Received：25 July 2016，
  
  Revised：04 November 2016，
  
  Accepted：30 November 2016
- Accepted：
Scan QR Code
Traverso, A. J. et al. Directional coherent light via intensity-induced sideband emission. Light: Science & Applications, 6, e16262 (2017).
DOI：

Traverso, A. J. et al. Directional coherent light via intensity-induced sideband emission. Light: Science & Applications, 6, e16262 (2017). DOI： 10.1038/lsa.2016.262.

摘要

Abstract

We introduce a unique technique for generating directional coherent emissions that could be utilized to create coherent sources in a wide range of frequencies from the extreme ultraviolet (XUV) to the deep infrared. This is accomplished without population inversion by pumping a two-level system with a far-detuned strong optical field that induces the splitting of the two-level system. A nonlinear process of four-wave mixing then occurs across the split system

driving coherent emission at sidebands both red- and blue-detuned from the pump frequency

and propagates both forward and backward along the pump beam path. We observed this phenomenon in dense rubidium vapor along both the

and

transitions. The sideband emission exhibits a short pulse duration (

1 ns) with threshold-like behavior dependent on both the pump intensity and Rb vapor density. This technique offers a new capability for mani

pulating the emission frequency simply through intensity-induced atomic modulation that can be scaled to most frequency regimes using various atomic/molecular ensembles and pump energies.

关键词

Keywords

coherent emissioncollective coherencefour-wave mixing

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