Results 11 to 20 of about 308,960 (294)

Integrated optics [PDF]

open access: yes1972 International Electron Devices Meeting, 1972
n order to enable optical systems to operate with a high degree of compactness and reliability it is necessary to combine large number of optical functions in small monolithic structures.
Yariv, Amnon
core   +5 more sources

The Method of Low-Temperature ICP Etching of InP/InGaAsP Heterostructures in Cl2-Based Plasma for Integrated Optics Applications [PDF]

open access: yesMicromachines, 2021
Chlorine processes are widely used for the formation of waveguide structures in InP-based optoelectronics. Traditionally, ICP etching of InP in a Cl2-based plasma requires substrate temperatures in the range of 150–200 °C.
Sergey Ishutkin   +6 more
doaj   +2 more sources

Achieving the ultimate optical resolution [PDF]

open access: yesEPJ Web of Conferences, 2022
The accurate estimation of the separation between two signals is at the core of many modern technologies. We show new quantum-inspired schemes able to estimate that separation at the quantum limit. The method works in the spatial, temporal, and frequency
Sánchez-Soto Luis L.   +4 more
doaj   +1 more source

DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking

open access: yesCrystals, 2022
We study the DC conductivity in potassium titanyl phosphate (KTiOPO4, KTP) and its isomorphs KTiOAsO4 (KTA) and Rb1%K99%TiOPO4 (RKTP) and introduce a method by which to reduce the overall ionic conductivity in KTP by a potassium nitrate treatment ...
Laura Padberg   +7 more
doaj   +1 more source

Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW)

open access: yesInternational Journal of Analytical Chemistry, 2021
Meanwhile, electrowetting-on-dielectric (EWOD) is a well-known phenomenon, even often exploited in active micro-optics to change the curvature of microdroplet lenses or in analytical chemistry with digital microfluidics (DMF, lab on a chip 2.0) to move ...
Christoph Doering   +2 more
doaj   +1 more source

Manifestations of Laser-Induced Graphene under Ultraviolet Irradiation of Polyimide with Varied Optical Fluence

open access: yesNanomaterials, 2022
In this work, we put forward a rigorous study on ultraviolet (355-nm) laser irradiation of polyimide for the realization of high-quality laser-induced graphene (LIG) with micron-scale features.
Ilija R. Hristovski   +5 more
doaj   +1 more source

Spatial and spectral characteristics in realizations of broadband terahertz spectroscopy on a subwavelength scale

open access: yesScientific Reports, 2023
In this work, we take aim at the fundamental challenge for realizations of broadband terahertz (THz) spectroscopy on a subwavelength scale. We introduce apertured THz microjets in this effort to resolve the fundamental limits of spatial resolution and ...
Alexis N. Guidi   +2 more
doaj   +1 more source

Predicting the extinction peak wavelength of SERS-active dimer based on deep learning

open access: yesAIP Advances, 2023
With the advent of surface-enhanced Raman spectroscopy (SERS), dimers consisting of metal nanoparticles, as typical representatives of SERS substrates, have been extensively studied and applied.
Yuping Liu   +4 more
doaj   +1 more source

Enhanced terahertz third-harmonic generation by bound states in the continuum in graphene grating-like metamaterial

open access: yesFrontiers in Physics, 2023
Non-linear metamaterials hold great promise for enhanced terahertz harmonic generation. Here, we numerically investigate enhanced terahertz third-harmonic generation (THG) by exploiting the symmetry-protected bound states in the continuum (BICs) in ...
Baoku Wang   +7 more
doaj   +1 more source

Multi-Pulse Bound Soliton Fiber Laser Based on MoTe2 Saturable Absorber

open access: yesNanomaterials, 2022
Bound solitons have become a hot topic in the field of nonlinear optics due to their potential applications in optical communication, information processing and radar systems. However, the trapping of the cascaded bound soliton is still a major challenge
Bo Guo   +6 more
doaj   +1 more source

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