Results 91 to 100 of about 41,783 (289)

Short‐Wavelength Infrared Imaging with Organic Photodetectors Based on Non‐Fullerene Acceptors with Detection above 1200 nm

Advanced Materials, EarlyView.
Solution‐processed organic photodetectors (OPDs) based on two novel low band gap non‐fullerene acceptors BZIC‐2F and BZIC‐2Cl, when blended with common polymer donor P3HT, extend detection range beyond 1200 nm with superior performance, rivaling costly inorganic sensors and past literature.
Zhuoran Qiao, Sandeep Sharma, Yakun He, Marie Houot, Kun‐Han Lin, Davide Nodari, Filip Aniés, Matilde Brunetta, Patipan Sukpoonprom, Eunyoung Hong, Edoardo Angela, Zian Wang, Pichaya Pattanasattayavong, Martyn A. McLachlan, Artem Bakulin, Denis Andrienko, Frédéric Laquai, Martin Heeney, Nicola Gasparini   +18 more
wiley   +1 more source

Ultrafast Electrically Pumped VECSELs

IEEE Photonics Journal, 2013
We present an improved design for electrically pumped vertical external-cavity surface-emitting lasers (EP-VECSELs) optimized for passive modelocking with a semiconductor saturable absorber mirror (SESAM).
W. P. Pallmann, C. A. Zaugg, M. Mangold, I. Dahhan, M. Golling, B. W. Tilma, B. Witzigmann, U. Keller   +7 more
doaj   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Recent developments and advances in artificial saturable absorber for mode-locking in fiber lasers

Results in Engineering
In this work, we review recent work developments in artificial saturable absorbers (SAs) for ultrafast fiber lasers. The working principles of each technique, namely nonlinear polarization rotation (NPR), nonlinear optical loop mirror (NOLM) and ...
Yu Chen, Sin Jin Tan, Sulaiman Wadi Harun, G. Vinitha, Truong Khang Nguyen, Zian Cheak Tiu   +5 more
doaj   +1 more source

Carbon nanotubes for ultrafast fibre lasers

Nanophotonics, 2017
Carbon nanotubes (CNTs) possess both remarkable optical properties and high potential for integration in various photonic devices. We overview, here, recent progress in CNT applications in fibre optics putting particular emphasis on fibre lasers.
Chernysheva Maria, Rozhin Aleksey, Fedotov Yuri, Mou Chengbo, Arif Raz, Kobtsev Sergey M., Dianov Evgeny M., Turitsyn Sergei K.   +7 more
doaj   +1 more source

All-Fiber Saturable Absorbers for Ultrafast Fiber Lasers

IEEE Photonics Journal, 2019
The past decade has witnessed tremendous achievements of ultrafast fiber laser technologies due to rapid developments of saturable absorbers (SAs) based on, in particular, nanomaterials such as 0D quantum dot, 1D carbon nanotubes, 2D layered materials ...
Wei Zhao, Guangwei Chen, Wenlei Li, Guomei Wang, Chao Zeng   +4 more
doaj   +1 more source

Farey tree and devil's staircase of frequency-locked breathers in ultrafast lasers. [PDF]

Nat Commun, 2022
Wu X, Zhang Y, Peng J, Boscolo S, Finot C, Zeng H.   +5 more
europepmc   +1 more source

Multiwavelength ultrafast LiNbO_3 Raman laser

Optics Express, 2015
We present a multiwavelength ultrafast Raman laser based on lithium niobate which uses polariton scattering in combination with Raman scattering to selectively generate new wavelengths from a nanojoule-scale picosecond pump laser. Pumped by a 1064 nm pump laser, the system generates 1123 nm by stimulated polariton scattering (SPS) and 1140 nm by ...
Aravindan M, Warrier, Jipeng, Lin, Helen M, Pask, Andrew J, Lee, David J, Spence   +4 more
openaire   +2 more sources

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

Advanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela, Sergio Triviño‐Sánchez, Andrés Guerrero‐Martínez, Luis M. Liz‐Marzán, Guillermo González‐Rubio   +4 more
wiley   +1 more source

Colloidal Plasmonic Nanoparticles for Ultrafast Optical Switching and Laser Pulse Generation

Frontiers in Materials, 2018
Light-matter interactions are greatly enhanced and spatially well-confined in plasmonic nanostructures in the spectral resonance range. In colloidal plasmonic nanoparticle (NP), this effect is manifested by the strong absorption caused by the collective ...
Xiaofeng Liu
doaj   +1 more source