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Applied Physics Letters / Volume 100 / Issue 6 / PHOTONICS AND OPTOELECTRONICS

Appl. Phys. Lett. 100, 061119 (2012); http://dx.doi.org/10.1063/1.3684252 (3 pages)

Manifestation of quantum disordered wave functions with weak localization from conical second harmonic generation in ferroelectric crystal

H. H. Yu1, H. J. Zhang1, Z. P. Wang1, H. H. Xu1, Y. C. Wang1, J. Y. Wang1, and V. Petrov2

1State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China
2Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy, 2 A Max-Born-Strasse, 12489 Berlin, Germany

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(Received 13 January 2012; accepted 23 January 2012; published online 9 February 2012)

The spatial structure of two-dimensional quantum disordered wave functions with weak localization (WL) is experimentally observed using a calcium barium niobate Ca0.28Ba0.72Nb2O6 (CBN-28) ferroelectric crystal illuminated by a pulsed laser beam. Non-collinear phase-matching in CBN-28 produces conical second harmonic pattern in the far-field. The probability density distribution of the experimental near-field pattern agrees very well with the theoretical predictions. The localization degree, within the error limits, is the same at different transverse positions due to the periodicity of the crystal and the eigenfunctions are degenerated. We conclude that a ferroelectric crystal represents an ideal model system for investigation of WL.

© 2012 American Institute of Physics

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KEYWORDS, PACS, and IPC

Keywords

barium compounds, calcium compounds, eigenvalues and eigenfunctions, ferroelectric materials, laser beams, optical harmonic generation, optical phase matching, quantum optics, wave functions, weak localisation

PACS

  • 42.50.-p

    Quantum optics

  • 42.79.Nv

    Optical frequency converters

  • 42.65.Ky

    Frequency conversion; harmonic generation, including higher-order harmonic generation

  • 42.60.Jf

    Beam characteristics: profile, intensity, and power; spatial pattern formation

  • 73.20.Fz

    Weak or Anderson localization

  • 77.84.-s

    Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials

International Patent Classification (IPC)

  • G02F1/35

    Non-linear optics

  • G02F2/00

    Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light

  • H01L41/18

    For piezo-electric or electrostrictive elements

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3684252

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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