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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 16 — Jul. 30, 2012
  • pp: 17566–17580

Generation of vacuum-ultraviolet pulses with a Doppler-broadened gas utilizing high atomic coherence

Li Deng and Takashi Nakajima  »View Author Affiliations


Optics Express, Vol. 20, Issue 16, pp. 17566-17580 (2012)
http://dx.doi.org/10.1364/OE.20.017566


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Abstract

We carry out the theoretical study for the generation of vacuum-ultraviolet pulses with a Doppler-broadened gas utilizing high atomic coherence. It is essentially a difference-frequency generation scheme induced by the two-photon near-resonant pump and probe pulses, where the key point is to generate high atomic coherence between the ground and two-photon near-resonant states through a variant of stimulated Raman adiabatic passage with a time-dependent detuning. The advantage of our scheme is that the degree of coherence is sensitive to neither the exact amount and even sign of the detuning, nor the exact timing between the pump, auxiliary, and probe pulses. Hence our scheme is practically insensitive to Doppler broadening. As a specific example, we consider the generation of picosecond Lyman-α pulses with a Kr gas, and quantitatively study the influence of Doppler broadening as well as the intensity and incident timing of the picosecond probe pulse with respect to the pump pulse. The numerical results indicate that our scheme has a certain advantage over the conventional scheme which utilizes two-photon resonant excitation.

© 2012 OSA

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 23, 2012
Revised Manuscript: June 29, 2012
Manuscript Accepted: June 29, 2012
Published: July 18, 2012

Citation
Li Deng and Takashi Nakajima, "Generation of vacuum-ultraviolet pulses with a Doppler-broadened gas utilizing high atomic coherence," Opt. Express 20, 17566-17580 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-16-17566


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