Results 91 to 100 of about 3,452 (196)

Compact vertical emitting ring interband cascade lasers for isotope-resolved CO2 sensing

APL Photonics
We present a compact vertically emitting ring interband cascade laser (ICL) with low power consumption and the possibility for seamless integration into various CO2 sensing applications.
Georg Marschick, Stefania Isceri, Rolf Szedlak, Harald Moser, Johannes P. Waclawek, Elena Arigliani, Robert Weih, Werner Schrenk, Gottfried Strasser, Borislav Hinkov, Aaron Maxwell Andrews, Bernhard Lendl, Benedikt Schwarz   +12 more
doaj   +1 more source

Enhanced Chaos Generation in Mid-Infrared Interband Cascade Lasers Under Amplitude-Modulated Optical Injection

Photonics
We numerically investigate the dynamics of an interband cascade laser (ICL) subjected to amplitude-modulated optical injection from a directly modulated master ICL.
Hong Han, Jiada Xu, Zhiwei Jia, Jianguo Zhang, Mingming Huo, K. Alan Shore   +5 more
doaj   +1 more source

Immunity of intersubband polaritons to inhomogeneous broadening

, 2017
We demonstrate that intersubband (ISB) polaritons are robust to inhomogeneous effects originating from the presence of multiple quantum wells (MQWs). In a series of samples that exhibit mid-infrared ISB absorption transitions with broadenings varying by ...
Biasiol, G., Carusotto, I., Colombelli, R., Manceau, J-M., Tran, N. L.   +4 more
core   +3 more sources

Photoacoustic Detection of Short-Chained Hydrocarbon Isotopologues

Proceedings, 2019
We report, to our knowledge, the first optical detection of the main isotopologues of short-chained hydrocarbons. The sensor system is based on photoacoustic (also known as optoacoustic) spectroscopy (PAS, OAS). This technique takes advantage of the fact
Alain Loh, Marcus Wolff
doaj   +1 more source

Intersubband Quantum Disc-in-Nanowire Photodetectors with Normal-incidence Response in the Long-wavelength Infrared

, 2017
Semiconductor nanowires offer great potential for realizing broadband photodetectors that are compatible with silicon technology. However, the spectral range of such detectors has so far been limited to selected regions in the ultraviolet, visible and ...
Borgstrom, Magnus T., Fu, Ying, Geijselaers, Irene, Heurlin, Magnus, Jain, Vishal, Karimi, Mohammad, Limpert, Steven, Linke, Heiner, Nowzari, Ali, Pettersson, Hakan, Samuelson, Lars, Zeng, Xulu   +11 more
core   +1 more source

Lasers and photodetectors for mid-infrared 2–3 μm applications

, 2016
This paper presents an overview of the recent developments in III–V semiconductor lasers and detectors operating in the 2–3 μm wavelength range, which are highly desirable for various important applications, such as military, communications, molecular ...
Jagadish, Chennupati, Lei, Wen
core   +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

High Speed Mid-Wave Infrared Uni-traveling Carrier Photodetector

, 2020
Mid-wave infrared (MWIR) frequency comb is expected to dramatically improve the precision and sensitivity of molecular spectroscopy. For high resolution application, high speed MWIR photodetector is one of the key components, however, the commercially ...
Bowers, John, Chen, Baile, Chen, Yaojiang, Huang, Jian, Xie, Zhiyang   +4 more
core  

Spectroscopy studies of straincompensated mid-infrared QCL active regions on misoriented substrates [PDF]

, 2014
In this work, we perform spectroscopic studies of AlGaAs/InGaAs quantum cascade laser structures that demonstrate frequency mixing using strain-compensated active regions.
Cheng, Emily, Grayer, Justin, Meyer, Charles, Roberts, Denzil, Triplett, Gregory Edward   +4 more
core   +1 more source

Interband cascade detectors [PDF]

, 2007
A device for detecting radiation, typically in the infrared. Photons are absorbed in an active region of a semiconductor device such that the absorption induces an interband electronic transition and generates photo-excited charge carriers.
Chuang, Shun Lien, Li, Jian, Yang, Rui Q.   +2 more
core   +1 more source