Results 81 to 90 of about 2,525,720 (184)

Experimental investigation of parametric transfer in synchronously pumped optical parametric oscillators

, 2007
We experimentally investigate the parameters affecting parametric transfer in a synchronously pumped optical parametric oscillator for indirect shaping of mid-infrared ultrashort pulses and make comparisons with previously reported numerical modeling ...
Hung, H.S., Shepherd, D.P., Hanna, D.C., Jerry Prawiharjo, Nikita K. Daga, David C. Hanna, Prawiharjo, J., David P. Shepherd, Hazel S. S. Hung, Daga, N.K.   +9 more
core   +1 more source

Mid-infrared pumped laser-induced thermal grating spectroscopy for detection of acetylene in the visible spectral range [PDF]

, 2016
We present mid-infrared laser-induced thermal grating spectroscopy (IR-LITGS) using excitation radiation around 3 μm generated by a simple broadband optical parametric oscillator (OPO).
Aldén, Marcus,, Sahlberg, Anna Lena, Kiefer, Johannes, Sahlberg, Anna Lena,, Li, Zhongshan, Li, Zhongshan,, Kiefer, Johannes,, Lund University., Aldén, Marcus   +8 more
core   +1 more source

All-fiber supercontinuum absorption spectroscopy for mid-infrared gas sensing

APL Photonics
The development of compact fiber-based light sources emitting over a wide wavelength range in the mid-infrared and their application to the detection of greenhouse gases and volatile organic compounds still remain of critical interest.
Rémi Bizot, Idris Tiliouine, Frédéric Désévédavy, Grégory Gadret, Clément Strutynski, Esteban Serrano, Pierre Mathey, Bertrand Kibler, Sébastien Février, Frédéric Smektala   +9 more
doaj   +1 more source

The application of near infrared spectroscopy in nutritional intervention studies [PDF]

, 2013
Functional near infrared spectroscopy (NIRS) is a non-invasive optical imaging technique used to monitor cerebral blood flow (CBF) and by proxy neuronal activation.
Kennedy, David, Philippa A Jackson, David O. Kennedy, David O Kennedy, Philippa A. Jackson, Jackson, Philippa   +5 more
core   +1 more source

Wavelength selection for laser design in mid-infrared spectroscopy

Frontiers in Photonics
The development of miniaturized tunable laser sources for mid-infrared (MIR) spectroscopy has enabled portable, application-specific analytical devices.
Miriam Aledda, Federico Marini, Bijay Kafle, Mehmet C. Erdem, Pranish Karki, Kristian H. Liland, Boris Zimmermann, Nils K. Afseth, Alessandra Biancolillo, Valeria Tafintseva, Kristin Tøndel, Volha Shapaval, Achim Kohler   +12 more
doaj   +1 more source

Tungsten germanide superconducting nanowire single-photon detectors with saturated internal detection efficiency at wavelengths up to 29 µm [PDF]

APL Photonics
Superconducting nanowire single-photon detectors (SNSPDs) are among the most sensitive single-photon detectors available and have the potential to transform fields ranging from infrared astrophysics to molecular spectroscopy.
Varun B. Verma, Richard P. Mirin, Alexana Roshko, Allison V. Mis, Martin J. Stevens, Sae Woo Nam, Benedikt Hampel, Khalid Hossain, Alec M. Wodtke, Dirk Schwarzer, Matthew D. Shaw, Emma E. Wollman, Robert H. Hadfield, Sahil R. Patel, Andrew S. Mueller, Daniel Kuznesof   +15 more
doaj   +1 more source

Study on Heat Resistance of Rice Starch Crystal/Amorphous Structure

Liang you shipin ke-ji
The thermal denaturation of rice structure and its starch crystalline/amorphous structure was studied by mid-infrared (MIR) spectroscopy and two-dimensional mid-infrared (2D-MIR) spectroscopy.
WANG Wei, DU Lin-nan, XU Yuan-yuan, YU Hong-wei   +3 more
doaj   +1 more source

Interband cascade lasers for the mid-infrared spectral region [PDF]

, 2014
Financial support of this work by the German Ministry of Education and Research (FKZ: 13N12440) and by the European Commission in the framework of the FP7 project 'WideLase’ (grant no.
Dallner, M., S. Höfling, M. Dallner, R. Weih, Weih, R., Hoefling, S., Kamp, M., M. Kamp   +7 more
core   +1 more source

Mid-infrared dual-comb spectroscopy with quantum cascade lasers

APL Photonics
Since its invention in 1994, the quantum cascade laser (QCL) has emerged as a versatile light source of wavelength 4–12 µm, covering most of the mid- and long-wavelength infrared spectral ranges.
Jakob Hayden, Markus Geiser, Michele Gianella, Raphael Horvath, Andreas Hugi, Lukasz Sterczewski, Markus Mangold   +6 more
doaj   +1 more source

Fighting counterfeit pesticides using mid-infrared spectroscopy and chemometrics

Green Analytical Chemistry
The use of pesticides, which are essential for agriculture and public health, poses risks when they are of out of specification or counterfeited, as they may be ineffective, toxic, or harmful to human and animal health, crops, and the environment ...
Juan Antonio Fernández Pierna, Quentin Arnould, Delphine Delhotte, Pierre Hucorne, Gilles Rousseau, Jérôme Bodart, Vincent Baeten, Olivier Pigeon   +7 more
doaj   +1 more source