Nonlinear magneto-optical spectroscopy of YCrO3 and GaFeO 3

K. Eguchi, Y. Katayama, Y. Kawabe, E. Hanamura

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

Second harmonic generation (SHG) was observed from yttrium orthochromite (YCrO3 crystals with centrosymmetric structure. The origin of the SHG was determined to be a magnetic-dipole transition considering the resonant structure of SHG spectra and its polarization dependence. The intensity of SHG shows the drastic change at the Néel temperature under magnetic field and this fact suggests the effects from magnetic ordering. Along with the spectrum of the SHG intensity, phase of the nonlinear susceptibility was measured by analyzing the polarization characteristics of superposed fields from the sample and reference. The result shows that axial i-type χ(2) value is pure imaginary at the peak wavelength. Gallium ferrite (GaFeO3) has simultaneously four types of nonlinear optical tensors including polar i-, axial i-, polar c- and axial c-types. We observed SHG originating from c-type components by employing the experimental configuration where each contribution is separable. Structures of spectra and their relation to magnetic properties are discussed.

Original languageEnglish
Article number59240X
Pages (from-to)1-11
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5924
DOIs
Publication statusPublished - Dec 1 2005
Externally publishedYes
EventComplex Mediums VI: Light and Complexity - San Diego, CA, United States
Duration: Jul 31 2005Aug 2 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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