Results 81 to 90 of about 157,814 (199)

Characterization and Improvement of the Image Quality of the Data Taken with the Infrared Camera (IRC) Mid-Infrared Channels onboard AKARI

, 2011
Mid-infrared images frequently suffer artifacts and extended point spread functions (PSFs). We investigate the characteristics of the artifacts and the PSFs in images obtained with the Infrared Camera (IRC) onboard AKARI at four mid-infrared bands of the
Daisuke Kato, Fumi Egusa, Hideo Matsuhara, Ita Y., Itsuki Sakon, Kaneda H., Ko Arimatsu, Meixner M., Murakami H., Ohyama Y., Okumura K., Onaka T., Sakon I., Shinki Oyabu, Takashi Onaka, Takehiko Wada, Tanabé T., Toshihiko Tanabé, Yoshifusa Ita   +18 more
core   +1 more source

Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media

Scientific Reports, 2017
Peak and average power scalability is the key feature of advancing femtosecond laser technology. Today, near-infrared light sources are capable of providing hundreds of Watts of average power.
Marcus Seidel, Jonathan Brons, Gunnar Arisholm, Kilian Fritsch, Vladimir Pervak, Oleg Pronin   +5 more
doaj   +1 more source

The effects of dust on the optical and infrared evolution of SN 2004et

, 2011
We present an analysis of multi-epoch observations of the Type II-P supernova SN 2004et. New and archival optical spectra of SN 2004et are used to study the evolution of the Halpha and [O I] 6300A line profiles between days 259 and 646.
Andrews, Andrews, B. E. K. Sugerman, B. Ercolano, Barlow, Benetti, Bertoldi, Bianchi, Bohlin, Bouchet, Branch, Cardelli, D. L. Welch, Danziger, Dolphin, Dolphin, Draine, Ducati, Dwek, Dwek, Ercolano, Ercolano, Ercolano, Evans, Fabbri, Filippenko, Filippenko, Fitzgerald, Fransson, Geoffrey C. Clayton, Gerardy, Glass, Gordon, Hamuy, Herrmann, J. E. Andrews, J. Fabbri, Joseph S. Gallagher, Karachentsev, Kennicutt, Kirshner, Kotak, Kotak, Kozasa, Li, Li, Lucy, M. J. Barlow, M. Meixner, M. Otsuka, Maguire, Maiolino, Makovoz, Mathis, Meikle, Meikle, Meixner, Misra, Nozawa, Nugent, Panagia, Patat, Pozzo, R. Wesson, Richardson, Sahu, Schlegel, Stetson, Sugerman, Sugerman, Sugerman, Suntzeff, Szalai, Thatte, Todini, Tomaney, Walker, Welch, Wesson, Wooden, Woosley, Zubko, Zwitter   +82 more
core   +2 more sources

Gas phase sensors using advanced mid-infrared light sources

Gas sensing and detection have become increasingly important over the last decade. A few examples of applications include indoor CO2 sensors, exhaust gas monitoring and breath tests for medical applications. In order to be able to detect the relevant gases for these applications, laser spectroscopy is used for detection in the mid-infrared range.
openaire   +2 more sources

Mid-infrared Supercontinuum light sources For food control applications

, 2021
The advent of spectroscopy by Sir Isaac Newton by observing that white light from the sun can be separated into its constituent colors has found many applications in Scientific research. This observation has been so crucial in fields like color vision and thus, we can say color discrimination and vision is a crude form of spectroscopy. Spectroscopy can
openaire   +1 more source

Magellanic Cloud stars with TiO bands in emission: binary post-RGB/AGB stars or young stellar objects?

, 2013
Fourteen stars from a sample of Magellanic Cloud objects selected to have a mid-infrared flux excess have been found to also show TiO bands in emission. The mid-infrared dust emission and the TiO band emission indicate that these stars have large amounts
Kamath, D., Van Winckel, H., Wood, P. R.
core   +1 more source

OH-selected AGB and post-AGB objects I.Infrared and maser properties

, 2002
Using 766 compact objects from a survey of the galactic Plane in the 1612-MHz OH line, new light is cast on the infrared properties of evolved stars on the TP-AGB and beyond.
Bedijn P., Braz M., Habing H., Maartje N. Sevenster, Oudmaijer R., Sevenster M. N., Te Lintel Hekkert P., van der Veen W., van der Veen W., van der Veen W., van Hoof P., van Loon J., Zhang C. Y., Zijlstra A.   +13 more
core   +1 more source

Whispering-Gallery-Mode Microcavity Lasers from Visible to Mid-Infrared: Applications

Photonics
Whispering-gallery-mode (WGM) microcavities, with their ultra-high quality factors and deeply confined mode volumes, provide strong light–matter interaction and underpin a broad range of emerging photonic technologies.
Angzhen Li, Yindong Zhang, Xiaosong Lu
doaj   +1 more source

Fast efficient photon deceleration in plasmas by using two laser pulses at different frequencies

Matter and Radiation at Extremes
The generation of ultrashort high-power light sources in the mid-infrared (mid-IR) to terahertz (THz) range is of interest for applications in a number of fields, from fundamental research to biology and medicine.
Y. X. Wang, X. L. Zhu, S. M. Weng, P. Li, X. F. Li, H. Ai, H. R. Pan, Z. M. Sheng   +7 more
doaj   +1 more source

Mid-Infrared upconversion imaging and spectroscopy using short pulse light source

, 2021
As Frank J. Low once said, ‘‘Every object in the universe with a temperature above absolute zero radiates in the infrared, so this part of the spectrum contains a great deal of information’’. The infrared region of the electromagnetic spectrum is rich in molecular absorption features, but in general, it is challenged by the lack of coherent light ...
openaire   +1 more source