Results 81 to 90 of about 258,190 (217)

Multispectral Mid‐Infrared Imaging With Incoherent Light via Adiabatic Upconversion

Laser &Photonics Reviews, EarlyView.
We demonstrate room‐temperature broadband MIR imaging based on adiabatic frequency upconversion, driven by a Q‐switched pump laser and incoherent illumination. The small‐foot‐print system upconverts the spectral range to the visible domain, without scanning, thermal control and with spatial resolution below 20μm$20\mathrm{\mu}\mathrm{m}$.
Daniel Beitner, Ziv Abelson, Eyal Hollander, Omri Meron, Haim Suchowski   +4 more
wiley   +1 more source

Heterogeneous Integration of Multi‐Band Mode‐Locked and Single‐Mode Lasers on an Extended Commercial SiN Platform

Laser &Photonics Reviews, EarlyView.
Micro‐transfer printing enables GaAs and InP gain materials to be integrated on a commercial silicon nitride photonic platform. The resulting chip supports O‐ and C‐band comb and single‐mode lasers, demonstrating a scalable route toward multi‐material, multi‐wavelength, and multifunctional integrated light sources.
Dongbo Wang, Tom Reep, Thi Ngoc Lam Tran, Stijn Poelman, Jing Zhang, Jose Carreira, Camiel Op de Beeck, Stijn Cuyvers, Michael Geiselmann, Maximilien Billet, Dries Van Thourhout, Gunther Roelkens, Bart Kuyken   +12 more
wiley   +1 more source

Control of Intrinsic Defects in Lithium Niobate Single Crystal for Optoelectronic Applications

Crystals, 2017
A single crystal of lithium niobate is an important optoelectronic material. It can be grown from direct melt only in a lithium deficient non-stoichiometric form as its stoichiometric composition exhibits incongruent melting.
Rajeev Bhatt, Indranil Bhaumik, Sarveswaran Ganesamoorthy, Riscob Bright, Mohammad Soharab, Ashwini Kumar Karnal, Pradeep Kumar Gupta   +6 more
doaj   +1 more source

Opportunities for 2D‐Material‐Based Multifunctional Devices and Systems in Bioinspired Neural Networks

Small, EarlyView.
Bio‐inspired computing offers a route to highly energy‐efficient artificial intelligence. The unique physical properties of two‐dimensional (2D) materials can further enhance such computing approaches. This perspective highlights recent developments in 2D materials‐based neuromorphic devices and discusses future opportunities for integrating such novel
Jin Feng Leong, Maheswari Sivan, Jieming Pan, Zihang Fang, Jianan Li, Zefeng Xu, Shi Zhao, Quanzhen Wan, Evgeny Zamburg, Aaron Voon‐Yew Thean   +9 more
wiley   +1 more source

Hybrid thin-film lithium niobate silicon nitride photonic integrated circuits

, 2022
Prather, Dennis W.For the past 30 years, the Silicon on Insulator (SOI) platform has dominated the field of photonic integrated circuits. Silicon is hugely abundant, optically capable, and has had decades of research performed by the semiconductor ...
Hurley, Cooper
core   +1 more source

Edge treatment for spurious mode suppression in thin-film lithium niobate resonators

Scientific Reports
Thin-film lithium niobate is an attractive material for RF acoustic devices because of its high electromechanical coupling. However, due to the large coupling and the high anisotropy, thin-film lithium niobate resonators are prone to accidental ...
Arjun Aryal, Sidhant Tiwari, Darren W. Branch, Aleem Siddiqui, Tito Busani   +4 more
doaj   +1 more source

Interferometric Vector Piezoresponse Force Microscopy for Simultaneous Ferroelectric Domain and Crystallographic Orientation Mapping in Uniaxial Ferroelectric Polycrystals

Small, EarlyView.
Interferometric vector piezoresponse force microscopy is used to reconstruct crystallographic grain orientations in polycrystalline ferroelectrics directly from local electromechanical response. The approach reveals grain orientation, polarization direction, and domain structure simultaneously, establishing a pathway toward EBSD‐like orientation ...
R. Dragland, J. Schultheiß, I. N. Ushakov, R. Proksch, D. Meier   +4 more
wiley   +1 more source

Green-pumped, picosecond MgO:PPLN optical parametric oscillator

, 2011
We investigate the performance of a magnesium-oxide-doped periodically poled lithium niobate crystal (MgO:PPLN) in an optical parametric oscillator (OPO) synchronously-pumped by 530nm, 20ps, 230MHz pulses with an average power of up to 2W from a ...
Florian Kienle, Dejiao Lin, Lin, Dejiao, David J. Richardson, Major, Huw, Richardson, David J., Kienle, Florian, Shepherd, David P., Shaif-ul Alam, Gawith, Corin B.E., Corin B. E. Gawith, Hung, Hazel, Huw E. Major, Alam, Shaif-ul, David P. Shepherd, Hazel S. S. Hung   +15 more
core   +1 more source

Scalable Room‐Temperature Terahertz Graphene Cameras

Small Methods, EarlyView.
ABSTRACT Terahertz (THz) imaging has emerged as a powerful tool for non‐destructive, label‐free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial‐dependent information in a broad range of frequencies, this technique enables the identification of chemical composition ...
Lili Shi, Leonardo Viti, Miriam S. Vitiello   +2 more
wiley   +1 more source

Electrostatic Control of Terahertz High‐Harmonic Generation in Turbostratically Stacked Graphene

Small Methods, EarlyView.
This study investigates electrostatic control of terahertz high‐harmonic generation in top‐gated turbostratic multilayer graphene. A quantitative model combining graphene's thermodynamic nonlinear terahertz response with multilayer bias screening reproduces the experimental yields.
Seong Cheol Lee, Donghak Oh, Wontae Kim, Soojeong Baek, Dongho Lee, Bumki Min, Fabian Rotermund   +6 more
wiley   +1 more source