First-Order Forward and Backward Quasi-Phase Matched We propose and design a high-efficiency forward and backward second harmonic generation (SHG) in nonlinear polymer filled silicon slot waveguide known as silicon-organic hybrid (SOH) waveguides. The spatial distribution of second-order nonlinearity, χ(2), of waveguide is altered by periodically poling of nonlinear polymer to achieve quasi-phase matching (QPM) between fundamental frequency and Terahertz emission from a two-color plasma filament in a Terahertz emission in forward direction from a long two-color filament placed in the center of a slot waveguide is reported. The waveguide improves the collection and imaging of the generated THz radiation. By tuning the plate separation and position of the waveguide along the filament axis, the emitted mode can be matched to the collection optics. Loop-mirror-based slot waveguide refractive index sensor dex unit). Moreover, considering the contrast field distribution between orthogonal modes, slot waveguide can possess high birefringence. This has enabled applications in fields such as delay lines,15 broadband and highly efficient second harmonic generation in double-slot lithium niobate waveguidesthroughphasematching,16 etal.
Second harmonic generation (SHG; also called frequency doubling) is a nonlinear optical process, in which photons interacting with a nonlinear material are effectively "combined" to form new photons with twice the energy, and therefore twice the frequency and half the wavelength of the initial...
RP Photonics Encyclopedia - frequency doubling, frequency ... This can give rise to the phenomenon of frequency doubling [1], where an input (pump) wave generates another wave with twice the optical frequency (i.e. half the vacuum wavelength) in the medium. This process is also called second-harmonic generation. Second-harmonic generation - Wikipedia Second harmonic generation (also called frequency doubling or SHG) is a nonlinear optical process in which two photons with the same frequency interact with a nonlinear material, are "combined", and generate a new photon with twice the energy of the initial photons (equivalently, twice the frequency and half the wavelength). Efficient phase-matched third harmonic generation in a ...
Meta-Materials & Meta-Devices - ULTRAFAST & NANOSCALE
Efficient phase-matched third harmonic generation in a ... Efficient phase-matched third harmonic generation in a metal-clad plasmonic double-slot waveguide Tingting Wu1,2,4, Perry Ping Shum1,2,3, Xuguang Shao1, Yunxu Sun1,4, Tinaye Huang1,2 and Lei Wei1 1School of Electrical and Electronics Engineering, Nanyang Technological University, 50 Nanyang Avenue 639798, Singapore RP Photonics Encyclopedia - frequency doubling, frequency ...
(PDF) High-confined second harmonic generation in nano ...
Second harmonic generation using IMI grating structure ...
High-confined second harmonic generation in nano-scale ...
Highly Efficient Second Harmonic Generation in Hyperbolic Abstract: Highly efficient second harmonic generation (SHG) bridging the mid-infrared (IR) and near-IR wavelengths in a coupled hyperbolic metamaterial waveguide with a nonlinear-polymer-filled nanoscale slot is theoretically investigated. Laser-induced nonlinear crystalline waveguide on glass Efficient second harmonic generation has been observed from the laser-induced crystalline waveguide, using a 976 nm diode pump. 13 μW of 488 nm output has been observed from a 17 mm long waveguide with 26.0 mW of launched diode pump power, corresponding to a normalized conversion efficiency of 4.4%W −1. Second harmonic generation using IMI grating structure In this paper, the nonlinear effect of second harmonic generation (SHG) in insulator-metal-insulator plasmonic waveguides was investigated. Initially, an IMI plasmonic waveguide was simulated and its SHG effect was considered, then an IMI grating structure was proposed to … Nonlinear Group IV photonics based on silicon and
Highly efficient phase-matched second harmonic generation using an asymmetric plasmonic slot waveguide configuration in hybrid polymer-silicon photonics