Results 71 to 80 of about 2,748 (191)

Supercontinuum generation in an imaging fiber taper

Optics Express, 2006
We report on supercontinuum generation in individual fibers of a commercial Schott imaging fiber taper. Supercontinuum spectrum covering a wavelength range from about 500 nm to 1 mum was obtained. Unlike conventional approaches which use either a single micro-structured photonic crystal fiber (PCF) or an individual fiber or PCF taper, the availability ...
Kebin, Shi, Fiorenzo G, Omenetto, Zhiwen, Liu   +2 more
openaire   +2 more sources

Efficient and Tunable Narrowband Second‐Harmonic Generation by a Large‐Area Etchless Lithium Niobate Metasurface

Laser &Photonics Reviews, EarlyView.
An etchless lithium niobate (LN) metasurface with a slanted periodic TiO2 grating enables efficient and narrowband second‐harmonic generation (SHG) thanks to the light confinement in the LN film granted by quasi‐bound‐state‐in‐the‐continuum (q‐BIC) modes.
Yaping Hou, Yigong Luan, Yu Fan, Alfonso Nardi, Attilio Zilli, Bobo Du, Jinyou Shao, Marco Finazzi, Chunhui Wang, Lei Zhang, Michele Celebrano   +10 more
wiley   +1 more source

Supercontinuum generation in quasi-phasematched waveguides

Optics Express, 2011
We numerically investigate supercontinuum generation in quasi-phase-matched waveguides using a single-envelope approach to capture second and third order nonlinear processes involved in the generation of octave-spanning spectra. Simulations are shown to agree with experimental results in reverse-proton-exchanged lithium-niobate waveguides.
C R, Phillips, Carsten, Langrock, J S, Pelc, M M, Fejer, I, Hartl, Martin E, Fermann   +5 more
openaire   +2 more sources

Visible Octave Frequency Combs in Silicon Nitride Nanophotonic Waveguides Driven by Ti:Sapphire Lasers

Laser &Photonics Reviews, EarlyView.
Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi, Ewan Allan, Hanna Ostapenko, Pablo Castro‐Marín, Derryck T. Reid, Pascal Del'Haye   +5 more
wiley   +1 more source

Supercontinuum generation with a chirped-pulse oscillator

Optics Express, 2009
We demonstrate the generation of a high power ultrabroadband supercontinuum by coupling the uncompressed pulses from a Ti:Sapphire Chirped-pulse oscillator into a photonic crystal fibre that exhibits a highly anomalous dispersion at the centre wavelength of the laser.
A, Fuerbach, C, Miese, W, Koehler, M, Geissler   +3 more
openaire   +2 more sources

Comparison of optical features in nitrobenzene-core photonic crystal fiber with hexagonal and square lattices in the claddings

Communications in Physics
This paper proposes two novel photonic crystal fibers (PCFs) with a nitrobenzene core, designed using hexagonal and square lattice structures. The characteristics of the PCFs were numerically analyzed in detail and compared to selecting the proposed ...
Trong Dang Van, Bao Tran Le Tran, Ben Chu Van, Lanh Chu Van   +3 more
doaj   +1 more source

Pump coherent contrast control for octave-spanning smooth supercontinuum in all-normal dispersion fibers [PDF]

EPJ Web of Conferences
We study how the temporal coherent quality of input pulse influences supercontinuum generation properties in polarization-maintaining, all-normal-dispersion fibers. We demonstrate how factors such as pump duration, imperfections in spectral amplitude and
Marcadier Matis, Forget Nicolas, Pertot Yoann, Jullien Aurélie   +3 more
doaj   +1 more source

Fabrication‐Tolerant GaAs/SiN Coupling Above the Loss Threshold for Quantum Photonic Applications

Laser &Photonics Reviews, EarlyView.
Reliable low‐loss optical coupling between GaAs and SiN waveguides for heterogeneous integration of single‐photon sources is demonstrated. By developing a fabrication‐aware numerical design approach and accounting for experimentally measured fabrication variations and scattering losses, coupling efficiencies meeting the < 10% loss requirement for ...
Miloš Ljubotina, Jasper De Witte, Zhe Liu, Andraž Debevc, Leonardo Midolo, Gunther Roelkens, Bart Kuyken, Dries Van Thourhout, Marko Topič, Janez Krč   +9 more
wiley   +1 more source

Noise Suppression via Gain‐Dispersion‐Managed Nonlinear Amplification in a High‐Power Er‐Fiber Laser

Laser &Photonics Reviews, EarlyView.
Gain‐dispersion‐managed nonlinear pre‐amplification simultaneously suppresses phase and intensity noise, enabling scalable high‐power fiber amplification. The system delivers 102.3 W linearly polarized pulses with 1.19 µJ energy at 85.69 MHz and compresses them to 380 fs. Near‐linear power scaling without evident saturation highlights a practical route
Mei Yang, Yuan Chen, Tingting Liu, Zhuoren Wan, Yan Dai, Suyang Xu, Zhengru Guo, Kun Huang, Ming Yan, Heping Zeng   +9 more
wiley   +1 more source

Invited Article: Multiple-octave spanning high-energy mid-IR supercontinuum generation in bulk quadratic nonlinear crystals

APL Photonics, 2016
Bright and broadband coherent mid-IR radiation is important for exciting and probing molecular vibrations. Using cascaded nonlinearities in conventional quadratic nonlinear crystals like lithium niobate, self-defocusing near-IR solitons have been ...
Binbin Zhou, Morten Bache
doaj   +1 more source