Sun Y, Zheng Z, Cheng J, Sun G, Qiao G. 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. By engineering the geometrical RP Photonics Encyclopedia - frequency doubling, frequency ... Frequency doubling (or second-harmonic generation) is the phenomenon that an input wave in a nonlinear material can generate a wave with twice the optical frequency. Efficient Second Harmonic Generation in 3D Nonlinear ...
Second Harmonic Generation (SHG) is a coherent optical process of radiation of dipoles in the material, dependent on the second term of the expansion of polarization. The dipoles are oscillated with the applied electric field of frequency w, and it radiates electric field of 2w as well as 1w.
Apr 15, 2019 ... Highly Efficient Second Harmonic Generation in Hyperbolic Metamaterial Slot Waveguides With Large Phase Matching Tolerance. Highly efficient phase-matched second harmonic generation using an ... harmonic generation (SHG) efficiency in silicon compatible waveguides by considering an asymmetrical plasmonic slot waveguide geometry and a χ(2). Investigation of Hybrid Silicon-Nitride/Polymer Waveguides for Second ... Apr 26, 2019 ... ... nonlinear polymer waveguide to achieve second-harmonic generation of an ... For TE polarized light, the optimum slot waveguide exhibits an ... Left: configuration of the slot waveguide; Right (top and bottom ...
With state-of-the-art optical setups available for in-waveguide and free-space second-harmonic generation, measurements were/can be performed on both silicon nitride thin-films (using pico-second pulsed laser sources) and waveguides (using CW sources), showing values as high as 2pm/V for the nonlinear coefficient.
Spatial and spectral properties of the pulsed second harmonic generation in a periodically-poled KTP waveguide exploiting simultaneously the first, second, and third ... Efficient surface second-harmonic generation in slot micro ... Efficient surface second-harmonic generation in ... mismatch arising from waveguide and material dispersion in ... the slot surface also helps to enhance the surface ... OSA | Searching for evidence of optical rectification… Controllable color display induced by excitation-intensity-dependent competition between second and third harmonic generation in ZnO nanorods OSA | Phase-matched sum frequency generation in strained…
At the second harmonic frequency the gain 308 is less than −17 dB, indicating that the harmonic radiation is not radiated back through the coupling aperture and towards the signal source.
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
electric field and the optical physics of waveguides. Key optical waveguide building blocks such as directional couplers, Y-splitters, and Mach-Zehnder interferometers will be studied both analytically and with waveguide modeling software. Second-order nonlinear optical phenomena such as second harmonic generation, the Pockels effect,
Second Harmonic Generation from a Nanopatterned Isotropic ... Second-Harmonic Generation Imaging of Semiconductor Nanowires with Focused Vector Beams .... Complex modes in plasmonic nonlinear slot waveguides. Ultrafast All-Optical Switching in a Silicon-Nanocrystal-Based Silicon ...
PDF | We theoretically investigate the possible increase of the second harmonic generation (SHG) efficiency in silicon compatible waveguides by considering an asymmetrical plasmonic slot waveguide (PDF) High-confined second harmonic generation in nano PDF | We theoretically analyse quasi-phase matched second harmonic generation in a quadratic slot waveguide. Our results show that in this system both fundamental frequency and second harmonic (SH