Results 91 to 100 of about 52,939 (282)

Ultrabroadband air-dielectric double-chirped mirrors for laser frequency combs

Light: Science & Applications
Dispersion engineering is critical for the creation of integrated broadband laser frequency combs. In the long wavelength infrared range (LWIR, 8-13 µm), frequency combs based on quantum cascade lasers are attractive since they are monolithic ...
Tianyi Zeng, Yamac Dikmelik, Feng Xie, Kevin Lascola, David Burghoff, Qing Hu   +5 more
doaj   +1 more source

Short pulse generation and mode control of broadband terahertz quantum cascade lasers

, 2016
We report on a waveguide engineering technique that enables the generation of a bandwidth up to 1 THz and record ultra-short pulse length of 2.5 ps in injection seeded terahertz quantum cascade lasers.
Bachmann, Dominic, Beck, Mattias, Darmo, Juraj, Faist, Jérôme, Rösch, Markus, Scalari, Giacomo, Süess, Martin J., Unterrainer, Karl   +7 more
core   +2 more sources

Proof-of-principle of surface detection with air-guided quantum cascade lasers [PDF]

, 2008
We report a proof-of-principle of surface detection with air-guided quantum cascade lasers. Laser ridges were designed to exhibit an evanescent electromagnetic field on their top surface that can interact with material or liquids deposited on the device.
Colombelli, Raffaele, Krysa, Audrey B., Moreau, Virginie, Painter, Oskar, Perahia, Raviv, Wilson, Luke R.   +5 more
core   +1 more source

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

Measurement of the cavity dispersion in quantum cascade lasers using subthreshold luminescence

Nanophotonics
The measurement of the cavity dispersion is a key ingredient in the characterization of a laser frequency comb due to its fundamental role in predicting the multimode laser dynamics.
Schneider Barbara, Faist Jérôme
doaj   +1 more source

Tree array quantum cascade laser

Optics Express, 2009
A monolithic coupling scheme for mid-infrared quantum cascade laser arrays is investigated with respect to brightness enhancement. The tree-shaped resonator enables parallel coupling of six laser elements into a single element by means of several Y-junctions.
Leonard K, Hoffmann, Matthias, Klinkmüller, Elvis, Mujagić, Mykhaylo P, Semtsiv, Werner, Schrenk, William T, Masselink, Gottfried, Strasser   +6 more
openaire   +2 more sources

New‐Era Polymer Thermoelectrics: Material Innovations, Doping Frontiers, Decoupling Strategies, and Unconventional Applications

Advanced Materials, EarlyView.
The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley   +1 more source

Intersubband plasmons in the quantum limit in gated and aligned carbon nanotubes

Nature Communications, 2018
Quantum confinement has enabled the development of modern optoelectronic devices, including the quantum cascade laser, based on the control of intersubband plasmons. Here, Yanagi et al.
Kazuhiro Yanagi, Ryotaro Okada, Yota Ichinose, Yohei Yomogida, Fumiya Katsutani, Weilu Gao, Junichiro Kono   +6 more
doaj   +1 more source

Monte Carlo study of carrier-light coupling in terahertz quantum cascade lasers

, 2010
We present a method for self-consistently including the optical cavity field into Monte Carlo-based carrier transport simulations. This approach allows for an analysis of the actual lasing operation in quantum cascade lasers, considering effects such as ...
Jirauschek, Christian
core   +1 more source

Turning Unpredictable Biomolecule Adsorption to Controlled Corona Formation: Focus on Carbon Nanomaterials

Advanced Materials, EarlyView.
Controlling the protein corona formation onto carbon nanomaterials (CNMs) enhances their functionalities as platforms for cancer theranostics. Here, we reviewed the effects of the intrinsic and acquired properties of CNMs on protein corona formation, the consequent biological and toxicological outcomes, and the strategies to reshape corona formation ...
Yajuan Zou, Yalei Hu, Jie Yu, Naoki Komatsu, Yuta Nishina, Alberto Bianco   +5 more
wiley   +1 more source