optical harmonic generationphotonic devices2D materials are emerging as ideal candidates for fundamental investigations and new technologies due to their unique optoelectronic properties. Giant nonlinear susceptibility and perfect phase matching in 2D materials lead to extraordinary nonlinear light matter ...
Programmable nonlinear optical neuromorphic computing with bare 2D material MoS2 Lei Tong Yali Bi Lei Ye Nature Communications(2024) Giant electric field-induced second harmonic generation in polar skyrmions Sixu Wang Wei Li Qian Li Nature Communications(2024) ...
New possibilities for future developments in electronic and optical devices have been unlocked by recent advancements in two-dimensional (2D) materials, according to Penn State researchers. The researchers, led by Shengxi Huang, assistant professor of electrical engineering and biomedical engineering at ...
here orbital angular momentum conversion of optical vortices through second-harmonic generation from only one atomically thin WS2monolayer is demonstrated at room temperature. Moreover, it is shown that the valley-contrasting physics associated with the nonlinear optical selection rule in WS2monolayer preci...
One method of providing light at these wavelengths is to use the process of second harmonic generation in non-linear optical materials. Such an optical second harmonic generator arranged to couple light from a fundamental guided mode into a second harmonic radiation mode has an overlap parameter IN...
technology, such as all-optical modulators, all-optical wavelength converters, and all-optical thresholding devices are introduced. InSection 5, the 2D materials-integrated microfiber composite waveguide are summarized and the opportunities and challenges they will face in the future are briefly analyzed...
In particular, we carried out polarization-resolved second-harmonic generation (PSHG) imaging for monolayer WSand obtained, with high-precision, the orientation of the main crystallographic axis (armchair orientation) for each individual 120 × 120 nmpixel of the 2D crystal area. Such nanoscale ...
materialsWhile 2D materials have intriguing second‐order nonlinearities with ultrahigh coefficient and electrical tunability, their atomic layer thicknesses hinder explorations of other optical frequency conversions (OFCs) than second harmonic generation (SHG) due to inefficient light‐coupling and unachievable...
Research Highlights18 Dec 2023Nature Reviews Materials Volume: 9, P: 6 New nonlinear opportunities in the ultraviolet A nonlinear optical crystal permits harmonic generation of coherent radiation deep into the ultraviolet, reaching below 200 nm. ...
High harmonic generation (HHG) is an extremely nonlinear effect generating coherent broadband radiation and pulse durations reaching attosecond timescales. Conventional models of HHG that treat the driving and emitted fields classically are usually very