Generation of light with controllable spatial patterns via the sum frequency in quasi-phase matching crystals
arXiv:1405.1884 · doi:10.1038/srep05650
Abstract
Light beams with extraordinary spatial structures, such as the Airy beam (AB), the Bessel-Gaussian beam (BGB) and the Laguerre-Gaussian beam (LGB), are widely studied and applied in many optical scenarios. We report on preparation of light beams with controllable spatial structures through sum frequency generation (SFG) using two Gaussian pump beams in a quasi-phase matching (QPM) crystal. The spatial structures, including multi-ring-like BGB, donut-like LGB, and super-Gaussian-like beams, can be controlled periodically via crystal phase mismatching by tuning the pump frequency or crystal temperature. This phenomenon has not been reported or discussed previously. Additionally, we present numerical simulations of the phenomenon, which agree very well with the experimental observations. Our findings give further insight into the SFG process in QPM crystals, provide a new way to generate light with unusual spatial structures, and may find applications in the fields of laser optics, all-optical switching, and optical manipulation and trapping.
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References in corpus (8)
- Entanglement of Orbital Angular Momentum States of Photons
- Beating the channel capacity limit for linear photonic superdense coding
- Experimental high-dimensional two-photon entanglement and violations of generalised Bell inequalities
- Photonic polarization gears for ultra-sensitive angular measurements
- Single-Photon-Level Quantum Image Memory Based on Cold Atomic Ensembles
- Object Identification Using Correlated Orbital Angular Momentum States
- Ultralow noise up-conversion detector and spectrometer at telecom band
- Nonlinear Transformation of Orbital Angular Momentum through Quasi-phase Matching
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