Counter-propagating parametric interaction with phonon-polaritons in periodically poled KTiOPO_4

Jang, Hoon; Viotti, Anne-Lise; Strömqvist, Gustav; Žukauskas, Andrius; Canalias, Carlota; Pasiskevicius, Valdas

doi:10.1364/oe.25.002677

“…Three fundamental differences in Equations (15) and (16) distinguish them from their counterpart forward-wave three-wave mixing in ordinary materials. First, the signs with g in Equation (15) are opposite to that in Equation (16) because of the backwardness of this wave. Second, the opposite sign appears with α 1 because the energy flow S 1 is against the x-axis.…”

Section: Three-wave Mixing Of Continuous Electromagnetic Waves: Appromentioning

confidence: 99%

“…Backward-wave parametric oscillation without a resonator in the radio frequency range was reported in [38]. Coherent NLO coupling of ordinary contra-propagating light waves in the NLO crystals with spatially periodically modulated crystals have been realized in [10][11][12][13][14][15].…”

Section: Tailored Transparency Parametric Amplification and Compensamentioning

confidence: 99%

Shaping Light in Backward-Wave Nonlinear Hyperbolic Metamaterials

Popov

¹

,

Myslivets

²

,

Slabko

³

et al. 2018

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Backward electromagnetic waves are extraordinary waves with contra-directed phase velocity and energy flux. Unusual properties of the coherent nonlinear optical coupling of the phase-matched ordinary and backward electromagnetic waves with contra-directed energy fluxes are described that enable greatly-enhanced frequency and propagation direction conversion, parametrical amplification, as well as control of shape of the light pulses. Extraordinary transient processes that emerge in such metamaterials in pulsed regimes are described. The results of the numerical simulation of particular plasmonic metamaterials with hyperbolic dispersion are presented, which prove the possibility to match phases of such coupled guided ordinary and backward electromagnetic waves. Particular properties of the outlined processes in the proposed metamaterial are demonstrated through numerical simulations. Potential applications include ultra-miniature amplifiers, frequency changing reflectors, modulators, pulse shapers, and remotely actuated sensors.Keywords: optical metamaterials; fundamental concepts in photonics; light-matter interactions at the subwavelength and nanoscale; fundamental understanding of linear and nonlinear optical processes in novel metamaterials underpinning photonic devices and components; advancing the frontier of nanophotonics with the associated nanoscience and nanotechnology; nanostructures that can serve as building blocks for nano-optical systems; use of nanotechnology in photonics; nonlinear nanophotonics, plasmonics and excitonics; subwavelength components and negative index materials; slowing, store, and processing light pulses; materials for optical sensing, for tunable optical delay lines, for optical buffers, for high extinction optical switches, for novel image processing hardware, and for highly-efficient wavelength converters

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“…Therefore, nonlinear energy exchange between the waves at different frequencies traveling with equal co-directed phase velocities, whereas their energy fluxes are contra-directed, offers unusual exciting possibilities in controlling and manipulating light waves. Basically, coherent NLO coupling and quasi-phase-matching of contra-propagating light waves can be achieved in crystals through periodically spatially modulated nonlinearity [10][11][12][13][14][15] where some of the extraordinary processes described below have been or can be realized. The studies are on the way.…”

Section: Introductionmentioning

confidence: 99%

Shaping Light in Backward-Wave Nonlinear Hyperbolic Metamaterials

Popov¹,

Myslivets²,

Slabko³

et al. 2018

Preprint

View full text Add to dashboard Cite

Backward electromagnetic waves are extraordinary waves with contra-directed phase velocity and energy flux. Unusual properties of the coherent nonlinear optical coupling of the phase-matched ordinary and backward electromagnetic waves with contra-directed energy fluxes are described which enable greatly-enhanced frequency and propagation direction conversion, parametrical amplification, as well as control of shape of the light pulses. Extraordinary transient processes that emerge in such metamaterials in pulsed regimes are described. The results of the numerical simulation of particular plasmonic metamaterials with hyperbolic dispersion are presented, which prove the possibility to match phases of such coupled guided ordinary and backward electromagnetic waves. Particular properties of the outlined processes in the proposed metamaterial are demonstrated through numerical simulations. Potential applications include ultra-miniature amplifiers, frequency changing reflectors, modulators, pulse shapers, and remotely actuated sensors.

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“…Stimulated polariton scattering (SPS) has proven to be an efficient scheme to generate terahertz (THz) waves [1][2][3][4][5][6][7][8]. A polariton is a coupled quantum between the pump laser and the infrared-and Raman-active transverse optical (TO) modes in a crystal, and it behaves like phonons near the resonant frequency associated with the TO mode and exhibits photon-like behavior for lower non-resonant frequencies [1].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Generation of Two Orthogonally Polarized Terahertz Waves by Stimulated Polariton Scattering with a Periodically Poled LiNbO3 Crystal

Li

¹

,

Wang

²

,

Wang

³

et al. 2018

Crystals

2

0

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Abstract:We present a theoretical investigation of the simultaneous generation of two orthogonally polarized terahertz (THz) waves by stimulated polariton scattering (SPS) with a periodically poled LiNbO 3 (PPLN) crystal. The two orthogonally polarized THz waves are generated from SPS with A 1 and E symmetric transverse optical (TO) modes in a LiNbO 3 crystal, respectively. The parallel polarized THz wave is generated from A 1 symmetric TO modes with type-0 phase-matching of e = e + e, and the perpendicular polarized THz wave is generated from E symmetric TO modes with type-I phase-matching of e = o + o. The two types of phase-matching of e = e + e and e = o + o can be almost satisfied simultaneously by accurately selecting the poling period of the PPLN crystal. We calculate the photon flux density of the two orthogonally polarized THz waves by solving the coupled wave equations. The calculation results indicate that the two orthogonally polarized THz waves can be efficiently generated, and the relative intensities between the two orthogonally polarized THz waves can be modulated.

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Counter-propagating parametric interaction with phonon-polaritons in periodically poled KTiOPO_4

Cited by 15 publications

References 41 publications

Shaping Light in Backward-Wave Nonlinear Hyperbolic Metamaterials

Shaping Light in Backward-Wave Nonlinear Hyperbolic Metamaterials

Shaping Light in Backward-Wave Nonlinear Hyperbolic Metamaterials

Simultaneous Generation of Two Orthogonally Polarized Terahertz Waves by Stimulated Polariton Scattering with a Periodically Poled LiNbO3 Crystal

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