Two-wave mixing of phase-modulated beams in GaP under a dc electric field.

Optics letters · 2001 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3858

An analytical expression for phase-to-intensity transformation in 43m point-group crystals is derived using a vectorial diffraction theory, differing from prior scalar-approach solutions. The space-charge-field grating created in semi-insulating GaP at 632 nm…

Study snapshot

PublicationOptics letters · 2001

Study typeother

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Two-wave mixing of phase-modulated light beams in crystals of cubic symmetry is analyzed on the basis of the vectorial theory of light diffraction. We derive an analytical expression for phase-to-intensity transformation in crystals of the 43m point group of symmetry, which differs from the previously obtained solution based on the scalar approach. The most effective transformation is achieved when the amplitude of the space-charge-field grating is equal to the quarter-wave field. It is shown that the space-charge-field grating created in GaP semi-insulating crystal at the wavelength of 632 nm is much smaller than can be predicted from the one-level band-transport model.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

phase-to-intensity transformation in 43m symmetry crystals
space-charge-field grating amplitude in GaP at 632 nm compared with one-level band-transport model predictions

View raw extracted JSON

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  "outcomes": [
    "phase-to-intensity transformation in 43m symmetry crystals",
    "space-charge-field grating amplitude in GaP at 632 nm compared with one-level band-transport model predictions"
  ],
  "main_findings": "An analytical expression for phase-to-intensity transformation in 43m point-group crystals is derived using a vectorial diffraction theory, differing from prior scalar-approach solutions. The space-charge-field grating created in semi-insulating GaP at 632 nm is reported to be much smaller than predicted by a one-level band-transport model.",
  "effect_direction": "unclear",
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  "evidence_strength": "insufficient",
  "confidence": 0.74,
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  "keywords": [
    "two-wave mixing",
    "phase modulation",
    "vectorial diffraction theory",
    "GaP",
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    "space-charge-field grating",
    "632 nm",
    "photorefractive effect",
    "43m symmetry"
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1364/ol.26.000527
PubMed: 18040374

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