Efficient parametric generation in a nonlinear photonic crystal pumped by a dual beam
| Autor: | Enrico Brambilla, Alessandra Gatti |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Photon
FOS: Physical sciences Physics::Optics 02 engineering and technology Grating 01 natural sciences 010309 optics Optics Spontaneous parametric down-conversion 0103 physical sciences Nonlinear photonic crystal nonlinear photonic crystals Parametric statistics Quantum optics Physics Quantum Physics business.industry parametric generation Resonance 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Reciprocal lattice Quantum Physics (quant-ph) 0210 nano-technology business Physics - Optics Optics (physics.optics) twin beams |
| Zdroj: | Optics express 27 (2019): 30233–30248. doi:10.1364/OE.27.030233 info:cnr-pdr/source/autori:Brambilla, E.; Gatti, A./titolo:Efficient parametric generation in a nonlinear photonic crystal pumped by a dual beam/doi:10.1364%2FOE.27.030233/rivista:Optics express/anno:2019/pagina_da:30233/pagina_a:30248/intervallo_pagine:30233–30248/volume:27 |
| ISSN: | 1094-4087 |
| Popis: | We investigate parametric down-conversion in a hexagonally poled nonlinear photonic crystal, pumped by a dual pump with a transverse modulation that matches the periodicity of the nonlinear grating. A peculiar feature of this resonant configuration is that the two pumps simultaneously generate photon pairs over an entire branch of modes, via quasi-phasematching with both fundamental vectors of the reciprocal lattice of the nonlinearity. The parametric gain of these modes depends thus coherently on the sum of the two pump amplitudes and can be controlled by varying their relative intensities and phases. We find that a significant enhancement of the source conversion efficiency, comparable to that of one-dimensionally poled crystals, can be achieved by a dual symmetric pump. We also show how the four-mode coupling arising among shared modes at resonance can be tailored by changing the dual pump parameters. Comment: 15 pages, 9 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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