Results 51 to 60 of about 3,950 (203)

Self-consistent analysis of carrier-transport and carrier-capture dynamics in quantum cascade intersubband semiconductor lasers [PDF]

, 2000
A methodology for the self-consistent analysis of carrier transport and carrier capture aspects of the dynamics of quantum cascade intersubband semiconductor lasers is described in this paper. The approach is used to analyze two prototype quantum cascade
Cheung, C.Y.L., Kalna, K., Pierce, I., Shore, K.A.   +3 more
core   +1 more source

Structure‐Function Tailoring of Plasmonic Nanomaterials for Thin‐Film Photovoltaics

Carbon Energy, EarlyView.
This review discusses the mechanisms and recent advancements of plasmonics in achieving effective light management to enhance the performance of thin‐film solar cells. It highlights applications in high‐performance perovskite solar cells and future‐oriented tandem solar cells.
Sen Jiang, Wenhan Yang, Annan Zhu, Yuexin Lin, Zhaohui Xie, Ran Chen, Wenjing Zhu, Jin Liu, Yingjie Zhu, Wenye Jiang, Zhiyuan Gu, Kaiyang Wang, Shengchun Yang, Nan Zhang, Chao Liang   +14 more
wiley   +1 more source

Intensity noise and modulation dynamics of an epitaxial mid-infrared interband cascade laser on silicon

APL Photonics
Interband cascade lasers typically have significantly lower threshold current and power consumption than quantum cascade lasers. They can also have advantages regarding costs and compactness with the photonic integration onto silicon substrates by ...
H. Kim, P. Didier, S. Zaminga, D. A. Díaz-Thomas, A. N. Baranov, J. B. Rodriguez, E. Tournié, H. Knötig, B. Schwarz, L. Cerutti, O. Spitz, F. Grillot   +11 more
doaj   +1 more source

Mid-Infrared Fiber Amplification of a DFB Interband Cascade Laser

Photonics
The limited availability of powerful, tunable, and reliable mid-infrared sources has historically prevented their widespread adoption in spectroscopy applications, even if most greenhouse gases’ fundamental absorption lines are found in this region of ...
Louis-Charles Michaud, Tommy Boilard, Réal Vallée, Martin Bernier   +3 more
doaj   +1 more source

A Shock‐Tube Study of the HCl + M →$\to $ H + Cl + M (M = Ar) Rate Constant Using HCl Laser Absorption Near 3.3 µm

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT Hydrogen chlorine (HCl) is an important combustion intermediate during plastic (municipal waste) and composite propellant (aerospace) combustion, but the understanding of its high‐temperature chemistry is still evolving. In this study, the pyrolysis of 0.5% HCl in Ar was investigated behind reflected shock waves in a shock tube at temperatures
Claire M. Grégoire, Olivier Mathieu, Eric L. Petersen   +2 more
wiley   +1 more source

Optimizing the active region of interband cascade lasers for passive mode-locking

AIP Advances, 2017
The work proposes possible designs of active regions for a mode-locked interband cascade laser emitting in the mid infrared. For that purpose we investigated the electronic structure properties of respectively modified GaSb-based type II W-shaped quantum
K. Ryczko, J. Misiewicz, S. Höfling, M. Kamp, G. Sek   +4 more
doaj   +1 more source

RES-Q-Trace: A Mobile CEAS-Based Demonstrator for Multi-Component Trace Gas Detection in the MIR

Sensors, 2018
Sensitive trace gas detection plays an important role in current challenges occurring in areas such as industrial process control and environmental monitoring.
Norbert Lang, Uwe Macherius, Henrik Zimmermann, Sven Glitsch, Mathias Wiese, Jürgen Röpcke, Jean-Pierre H. van Helden   +6 more
doaj   +1 more source

Methane, Ethylene, and Ethane Detection by Differential Helmholtz Resonance Spectroscopy Using a 3345 nm Mid-Infrared Tunable Diode Laser Source

Applied Sciences, 2023
Gas detection based on photoacoustic spectroscopy (PAS) has attracted extensive attention due to its high sensitivity and large range of linearity. Herein, to achieve the simultaneous detection of the light carbon gases (CH4, C2H4, and C2H6), a gas ...
Zhe Wu, Yunxing Shi, Yuwang Han
doaj   +1 more source

Multiheterodyne spectroscopy using interband cascade lasers [PDF]

Optical Engineering, 2017
While mid-infrared radiation can be used to identify and quantify numerous chemical species, contemporary broadband mid-IR spectroscopic systems are often hindered by large footprints, moving parts and high power consumption. In this work, we demonstrate multiheterodyne spectroscopy using interband cascade lasers, which combines broadband spectral ...
Sterczewski, Lukasz A., Westberg, Jonas, Patrick, Charles Link, Kim, Chul Soo, Kim, Mijin, Canedy, Chadwick L., Bewley, William W., Merritt, Charles D., Vurgaftman, Igor, Meyer, Jerry R., Wysocki, Gerard   +10 more
openaire   +2 more sources

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source