Nonlinear optics ≈ Nonlinear optics
View article: Integrated photonics on thin-film lithium niobate
Integrated photonics on thin-film lithium niobate Open
Lithium niobate (LN), an outstanding and versatile material, has influenced our daily life for decades—from enabling high-speed optical communications that form the backbone of the Internet to realizing radio-frequency filtering used in ou…
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Subwavelength dielectric resonators for nonlinear nanophotonics Open
Enhancing optical nonlinearity Intense pulses of light interacting with a dielectric material can induce optical nonlinear behavior, whereby the frequency of the output light can be doubled or tripled or excited to even higher harmonics of…
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Nonlinear Optics with 2D Layered Materials Open
2D layered materials (2DLMs) are a subject of intense research for a wide variety of applications (e.g., electronics, photonics, and optoelectronics) due to their unique physical properties. Most recently, increasing research efforts on 2D…
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High- Quasibound States in the Continuum for Nonlinear Metasurfaces Open
Sharp electromagnetic resonances play an essential role in physics in general and optics in particular. The last decades have witnessed the successful developments of high-quality (Q) resonances in microcavities operating below the light l…
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Nonlinear metasurfaces: a paradigm shift in nonlinear optics Open
Frequency conversion processes, such as second- and third-harmonic generation, are commonly realized in nonlinear optics, offering opportunities for applications in photonics, chemistry, material science and biosensing. Given the inherentl…
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Nonlinear Metasurfaces Governed by Bound States in the Continuum Open
Nonlinear nanostructured surfaces provide a paradigm shift in nonlinear optics with new ways to control and manipulate frequency conversion processes at the nanoscale, also offering novel opportunities for applications in photonics, chemis…
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Enhanced Nonlinear Refractive Index in-Near-Zero Materials Open
New propagation regimes for light arise from the ability to tune the dielectric permittivity to extremely low values. Here, we demonstrate a universal approach based on the low linear permittivity values attained in the ε-near-zero (ENZ) r…
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Resonantly Enhanced Second-Harmonic Generation Using III–V Semiconductor All-Dielectric Metasurfaces Open
Nonlinear optical phenomena in nanostructured materials have been challenging our perceptions of nonlinear optical processes that have been explored since the invention of lasers. For example, the ability to control optical field confineme…
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Giant Nonlinear Response at the Nanoscale Driven by Bound States in the Continuum Open
Being motivated by the recent prediction of high-Q modes in subwavelength dielectric resonators inspired by bound states in the continuum (BIC), we study the second-harmonic generation from isolated subwavelength AlGaAs nanoantennas. We re…
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Integrated lithium niobate photonics Open
Lithium niobate (LiNbO 3 ) on insulator (LNOI) is a promising material platform for integrated photonics due to single crystal LiNbO 3 film’s wide transparent window, high refractive index, and high second-order nonlinearity. Based on LNOI…
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Nonlinear optical properties and applications of 2D materials: theoretical and experimental aspects Open
In this review, we survey the recent advances in nonlinear optics and the applications of two-dimensional (2D) materials. We briefly cover the key developments pertaining to research in the nonlinear optics of graphene, the quintessential …
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Self-starting bi-chromatic LiNbO<sub>3</sub> soliton microcomb Open
For its many useful properties, including second and third-order optical nonlinearity as well as electro-optic control, lithium niobate is considered an important potential microcomb material. Here, a soliton microcomb is demonstrated in a…
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Intense terahertz radiation and their applications Open
In this paper, we will review both past and recent progresses in the generation, detection and application of intense terahertz (THz) radiation. We will restrict the review to laser based intense few-cycle THz sources, and thus will not in…
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Nonlinear switching and solitons in PT‐symmetric photonic systems Open
One of the challenges of the modern photonics is to develop all‐optical devices enabling increased speed and energy efficiency for transmitting and processing information on an optical chip. It is believed that the recently suggested Parit…
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Second Harmonic and Sum-Frequency Generation from Aqueous Interfaces Is Modulated by Interference Open
The interfacial region of aqueous systems also known as the electrical double layer can be characterized on the molecular level with second harmonic and sum-frequency generation (SHG/SFG). SHG and SFG are surface specific methods for isotr…
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Halide Perovskites for Nonlinear Optics Open
Halide perovskites provide an ideal platform for engineering highly promising semiconductor materials for a wide range of applications in optoelectronic devices, such as photovoltaics, light‐emitting diodes, photodetectors, and lasers. Mor…
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Laser‐Driven Strong‐Field Terahertz Sources Open
A review on the recent development of intense laser‐driven terahertz (THz) sources is provided here. The technologies discussed include various types of sources based on optical rectification (OR), spintronic emitters, and laser‐filament‐i…
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Dynamic Nonlinear Image Tuning through Magnetic Dipole Quasi‐BIC Ultrathin Resonators Open
Dynamical tuning of the nonlinear optical wavefront allows for a specific spectral response of predefined profiles, enabling various applications of nonlinear nanophotonics. This study experimentally demonstrates the dynamical switching of…
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Nonlinear and quantum optics with whispering gallery resonators Open
Optical Whispering Gallery Modes (WGMs) derive their name from a famous\nacoustic phenomenon of guiding a wave by a curved boundary observed nearly a\ncentury ago. This phenomenon has a rather general nature, equally applicable to\nsound a…
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2D Layered Graphene Oxide Films Integrated with Micro‐Ring Resonators for Enhanced Nonlinear Optics Open
Layered 2D graphene oxide (GO) films are integrated with micro‐ring resonators (MRRs) to experimentally demonstrate enhanced nonlinear optics. Both uniformly coated (1−5 layers) and patterned (10−50 layers) GO films are integrated on compl…
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Ultra-efficient frequency comb generation in AlGaAs-on-insulator microresonators Open
Recent advances in nonlinear optics have revolutionized integrated photonics, providing on-chip solutions to a wide range of new applications. Currently, state of the art integrated nonlinear photonic devices are mainly based on dielectric…
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Invited Article: Enhanced four-wave mixing in waveguides integrated with graphene oxide Open
We demonstrate enhanced four-wave mixing (FWM) in doped silica waveguides integrated with graphene oxide (GO) layers. Owing to strong mode overlap between the integrated waveguides and GO films that have a high Kerr nonlinearity and low lo…
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Metal–organic frameworks as competitive materials for non-linear optics Open
The development of metal–organic frameworks may transform into a very promising area, namely, obtaining quantum and nonlinear metamaterials using chemical methods.
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Ultrabroadband nonlinear optics in nanophotonic periodically poled lithium niobate waveguides Open
Quasi-phase-matched interactions in waveguides with quadratic nonlinearities enable highly efficient nonlinear frequency conversion. In this paper, we demonstrate the first generation of devices that combine the dispersion engineering avai…
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Enhanced Second-Harmonic Generation Using Broken Symmetry III–V Semiconductor Fano Metasurfaces Open
All-dielectric metasurfaces, two-dimensional arrays of subwavelength low loss dielectric inclusions, can be used not only to control the amplitude and phase of optical beams, but also to generate new wavelengths through enhanced nonlinear …
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Two-Photon Blockade in an Atom-Driven Cavity QED System Open
Photon blockade is a dynamical quantum-nonlinear effect in driven systems with an anharmonic energy ladder. For a single atom strongly coupled to an optical cavity, we show that atom driving gives a decisively larger optical nonlinearity t…
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Enhanced Four‐Wave Mixing in Silicon Nitride Waveguides Integrated with 2D Layered Graphene Oxide Films Open
Layered 2D graphene oxide (GO) films are integrated with silicon nitride (SiN) waveguides to experimentally demonstrate an enhanced Kerr nonlinearity via four‐wave mixing (FWM). SiN waveguides with both uniformly coated and patterned GO fi…
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Resonant metasurfaces for generating complex quantum states Open
Quantum state engineering, the cornerstone of quantum photonic technologies, mainly relies on spontaneous parametric downconversion and four-wave mixing, where one or two pump photons spontaneously decay into a photon pair. Both of these n…
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All polarization-maintaining Er fiber-based optical frequency combs with nonlinear amplifying loop mirror Open
A fully stabilized all polarization-maintaining Er frequency comb with a nonlinear amplifying loop mirror with below 0.2 rad carrier-envelope-offset frequency phase noise is demonstrated. The integrated timing jitter is measured as 40 atto…
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Optical Anapoles: Concepts and Applications Open
Interference of electromagnetic modes supported by subwavelength photonic structures is one of the key concepts that underpins the nanoscale control of light in metaoptics. It drives the whole realm of all‐dielectric Mie‐resonant nanophoto…