scholarly journals A metasurface-based diamond frequency converter using plasmonic nanogap resonators

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 589-595
Author(s):  
Qixin Shen ◽  
Amirhassan Shams-Ansari ◽  
Andrew M. Boyce ◽  
Nathaniel C. Wilson ◽  
Tao Cai ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Quantum Communication ◽  
Single Photon ◽  
Second Harmonic ◽  
Frequency Converter ◽  
Phase Matching ◽  
Third Harmonic ◽  
Plasmonic Structures ◽  
Raman Lasers

AbstractDiamond has attracted great interest as an appealing material for various applications ranging from classical to quantum optics. To date, Raman lasers, single photon sources, quantum sensing and quantum communication have been demonstrated with integrated diamond devices. However, studies of the nonlinear optical properties of diamond have been limited, especially at the nanoscale. Here, a metasurface consisting of plasmonic nanogap cavities is used to enhance both χ(2) and χ(3) nonlinear optical processes in a wedge-shaped diamond slab with a thickness down to 12 nm. Multiple nonlinear processes were enhanced simultaneously due to the relaxation of phase-matching conditions in subwavelength plasmonic structures by matching two excitation wavelengths with the fundamental and second-order modes of the nanogap cavities. Specifically, third-harmonic generation (THG) and second-harmonic generation (SHG) are both enhanced 1.6 × 107-fold, while four-wave mixing is enhanced 3.0 × 105-fold compared to diamond without the metasurface. Even though diamond lacks a bulk χ(2) due to centrosymmetry, the observed SHG arises from the surface χ(2) of the diamond slab and is enhanced by the metasurface elements. The efficient, deeply subwavelength diamond frequency converter demonstrated in this work suggests an approach for conversion of color center emission to telecom wavelengths directly in diamond.

ENHANCING CONVERSION EFFICIENCY IN THE SECOND-ORDER NONLINEAR OPTICAL PHENOMENA

2004 ◽  
Vol 13 (03n04) ◽  
pp. 445-449
Author(s):  
JONGBAE KIM ◽  
JUNG JIN JU ◽  
MIN-SU KIM
Keyword(s):  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Phase Matching ◽  
Quasi Phase Matching ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena ◽  
Second Order Nonlinearity

The distributions of electric field and the induced second-order nonlinearity are discussed in a poling scheme where the width of a periodic electrode is shorter than the conventional coherent length. The theoretical aspects of quasi-phase matching for a subsequent experiment in second harmonic generation are analyzed. The present analysis consistently explains that the conversion efficiency can be enhanced if the electrode width is shortened, and maximized if the electrode width is optimized.

scholarly journals Study of nonlinear optical phenomena in silicone films encapsulated with SiO2 and Si/SiO2 spherical particles

2021 ◽  
Vol 2103 (1) ◽  
pp. 012119
Author(s):  
V Mastalieva ◽  
A Nikolaeva ◽  
V Neplokh ◽  
D Eurov ◽  
S Makarov ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optoelectronic Devices ◽  
Optical Devices ◽  
Spherical Particles ◽  
Second Harmonic Generation Signal ◽  
Visible Range ◽  
Third Harmonic ◽  
Nonlinear Optical Phenomena

Abstract Infrared converters to visible range are in demand for creation of optoelectronic devices, infrared visualizers and other non-linear optical devices. In this work we study nonlinear optical properties of monodisperse SiO2 and Si/SiO2 spheres encapsulated into silicone films. The fabricated silicone films containing SiO2 spheres demonstrated a bright third harmonic generation signal, and films with Si/SiO2 spheres demonstrated a significant second harmonic generation signal in the whole visible range. The developed materials and methods provide a platform for future infrared to visible converters based on silicon.

Nonlinear magneto-optics in garnet magnetophotonic crystals

2004 ◽  
Vol 834 ◽  
Author(s):  
O.A. Aktsipetrov ◽  
T.V. Dolgova ◽  
A.A. Fedyanin ◽  
R.V. Kapra ◽  
T.V. Murzina ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Kerr Effect ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Kerr Effect ◽  
Order Effects ◽  
Optical Parameters ◽  
Third Harmonic ◽  
Magnetophotonic Crystals ◽  
Magneto Optical Kerr Effect

ABSTRACTIn this paper the results of our recent studies of the magnetization-induced nonlinear optical second-order and third-order effects in magnetophotonic crystals and magnetophotonic microcavities are surveyed.Nonlinear magneto-optical Kerr effect (NOMOKE) both in magnetization-induced second-harmonic generation (MSHG) and magnetization-induced third-harmonic generation (MTHG) is observed in garnet MMC at wavelengths of the resonant microcavity modes. Magnetization-induced variations of MSHG and MTHG intensity as well as magnetization-induced shift of phase and rotation of polarization of second-harmonic and third-harmonic waves are observed in proper - transversal, longitudinal or polar - NOMOKE configurations.Nonlinear magneto-optical Kerr effect in MSHG intensity is observed in garnet magnetophotonic crystals in the spectral range of photonic band gap (PBG) edges of MPC.The MSHG intensity reveals enhancement by a factor of more than 102 if the fundamental wavelength is tuned in the vicinity of the PBG edge. This enhancement is attributed to the fulfilment of the phase matching conditions for MSHG effect in layered structures with periodic modulation of both optical (magneto-optical) and nonlinear optical parameters.

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