Induced focusing of optical pulses in a self-defocusing semiconductor medium

Galina Khitrova, H. M. Gibbs, R. Jin, Jiajin Xu, D. Boggavarapu

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The novel phenomenon of induced focusing predicted to occur in a self-defocusing non-linear medium is reported experimentally. A 10 ps pump pulse optically induces a refractive index spatial profile in a GaAs/AlGaAs planar waveguide which results in induced focusing of a subsequent weak copropagating probe pulse for appropriate relative spatial positions. With pump and probe pulses separated by one beam waist the probe output peak intensity is increased by 40%. These observations are consistent with two-tranverse-dimension beam-propagation computations with the carrier-density-dependent optical non-linearity modelled by the plasma theory.

Original languageEnglish (US)
Pages (from-to)73-78
Number of pages6
JournalQuantum Optics
Volume4
Issue number2
DOIs
StatePublished - Apr 1992

Fingerprint

defocusing
Laser pulses
Semiconductor materials
probes
Plasma theory
pulses
Pumps
pumps
Planar waveguides
plasma physics
Carrier concentration
aluminum gallium arsenides
Refractive index
nonlinearity
refractivity
waveguides
propagation
output
profiles

ASJC Scopus subject areas

  • Engineering(all)
  • Atomic and Molecular Physics, and Optics

Cite this

Induced focusing of optical pulses in a self-defocusing semiconductor medium. / Khitrova, Galina; Gibbs, H. M.; Jin, R.; Xu, Jiajin; Boggavarapu, D.

In: Quantum Optics, Vol. 4, No. 2, 04.1992, p. 73-78.

Research output: Contribution to journalArticle

Khitrova, Galina ; Gibbs, H. M. ; Jin, R. ; Xu, Jiajin ; Boggavarapu, D. / Induced focusing of optical pulses in a self-defocusing semiconductor medium. In: Quantum Optics. 1992 ; Vol. 4, No. 2. pp. 73-78.
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