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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Cross-polarized wave generation in the UV region
Lorenzo Canova1, Stoyan Kourtev, Nikolay Minkovski
1Laboratoire d'Optique Appliquée, ENSTA Paristech, Ecole Polytechnique, CNRS UMR-7639, Palaiseau Cedex, France.
Optics Letters
|October 17, 2008
Summary
We achieved efficient generation of cross-polarized femtosecond pulses in barium fluoride (BaF2) crystals within the ultraviolet (UV) region. This UV generation is six times more efficient than in the visible spectrum, revealing insights into nonlinear optical properties.
Area of Science:
- Nonlinear optics
- Quantum optics
- Solid-state physics
Background:
- Cross-polarized wave generation is a nonlinear optical process.
- Barium fluoride (BaF2) is a crystal with potential for nonlinear applications.
- Understanding nonlinear optical properties is crucial for developing advanced optical technologies.
Purpose of the Study:
- To experimentally demonstrate the generation of cross-polarized femtosecond pulses in BaF2 crystals in the UV region.
- To compare the efficiency of cross-polarized wave generation in the UV versus the visible spectrum.
- To determine the wavelength dispersion of third-order nonlinearity in BaF2.
Main Methods:
- Experimental generation of femtosecond pulses.
- Utilizing BaF2 crystals as the nonlinear medium.
- Spectroscopic analysis in the UV and visible regions.
Main Results:
- Successful demonstration of cross-polarized femtosecond pulse generation in BaF2 in the UV.
- Observed six times higher efficiency for unsaturated cross-polarized wave generation in the UV compared to the visible region.
- Deduced the wavelength dispersion of the third-order nonlinearity for BaF2.
Conclusions:
- BaF2 is an effective material for UV cross-polarized wave generation.
- UV cross-polarized wave generation in BaF2 exhibits significantly enhanced efficiency.
- The study provides valuable data on the nonlinear optical properties of BaF2, particularly its third-order nonlinearity dispersion.
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