Using quantum coherence to generate gain in the xuv and x-ray: Gain-swept superradiance and lasing without inversion

Eyob A. Sete, Anatoly A. Svidzinsky, Yuri V. Rostovtsev, Hichem Eleuch, Pankaj K. Jha, Szymon Suckewer, Marlan O. Scully

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

It was shown some time ago that when the excitation of an ensemble of two-level atoms is swept in the direction of lasing, so that atoms are prepared in the excited state just as the radiation from previously excited atoms reaches them, the resulting laser amplifier is highly anomalous and yields superradiant emission without population inversion. We here show that transient gain in a three-level system has common features with Dicke superradiance and can yield strong extreme ultraviolet lasing in, for example, He atoms (at 58 nm) or He-like ions such as $B 3+ (at 6.1 nm).

Original languageEnglish (US)
Article number6145139
Pages (from-to)541-553
Number of pages13
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume18
Issue number1
DOIs
StatePublished - 2012
Externally publishedYes

Keywords

  • Extreme ultraviolet (XUV)
  • gain-swept superradiance (GSS)
  • lasing without inversion (LWI)
  • quantum coherence
  • X-ray

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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