Results 91 to 100 of about 157,814 (199)

Photoacoustic spectroscopy of NO$_2$ using a mid-infrared pulsed optical parametric oscillator as light source

, 2017
A photoacoustic (PA) sensor for spectroscopic measurements of NO$_2$-N$_2$ at ambient pressure and temperature is demonstrated. The PA sensor is pumped resonantly by a nanosecond pulsed single-mode mid-infrared (MIR) optical parametric oscillator (OPO).
Lassen, Mikael, Lamard, Laurent, Balslev-Harder, David, peremans, Andre, Petersen, Jan C.   +4 more
openaire   +2 more sources

Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1

The Astrophysical Journal
The multiwavelength emissions, especially gamma-rays, of active galactic nuclei (AGNs) are essential for studying the physical properties of jets emanating from supermassive black holes at galaxy centers.
Hai-Qin Wang, Fang-Kun Peng, Rui Xue, Lu-Ming Sun   +3 more
doaj   +1 more source

Sample and Statistical Analysis on NEOWISE Variability of ATLASGAL Sources

The Astrophysical Journal Supplement Series
This study focuses on the analysis of mid-infrared variability in a sample of high-mass young stellar objects (YSOs) associated with the cataloged sources from the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL).
Ying Lu, Xi Chen, Shi-Min Song, Jun-Ting Liu, Tian Yang, You-Xin Wang, Yan-Kun Zhang, Shi-Jie Zhang   +7 more
doaj   +1 more source

All-fiber structure tunable mid-infrared light source based on acetylene-filled hollow-core fibers

Optics Express
Utilizing unique waveguiding properties, hollow-core fibers (HCFs) provide an ideal platform for studying light-matter interactions, pioneering what we believe to be new research directions in the fields of laser technology, optical communications and biophotonics.
Guorui Lv, Wenxi Pei, Guangrong Sun, Jing Shi, Qi Chen, Luohao Lei, Tianyu Li, Shuyi Wang, Peichong Liu, Zhiyue Zhou, Zefeng Wang   +10 more
openaire   +1 more source

Mid-infrared Variability from the Central Point Source as Direct Evidence for Obscured Low-luminosity Nuclear Activity in the Nearby Edge-on Galaxy IC 2207

The Astrophysical Journal
Reliable identification of ongoing nuclear activity in nearby galaxies is challenging when central regions are heavily obscured, especially for low-luminosity active galactic nuclei (AGN) whose emission can also be contaminated by the host galaxy.
Yifei Xiong, Lei Hao, Zhenzhen Li, Hongyan Zhou   +3 more
doaj   +1 more source

High-Harmonic Generation in an Optical Fiber Functionalized with Zinc Oxide Thin Films

Photonics
High-order harmonic generation (HHG) in semiconductor thin films from ultrashort mid-infrared laser drivers holds the potential for the realization of integrated sources of extreme ultraviolet light.
Idris Tiliouine, Yann Leventoux, Jean-Christophe Orlianges, Aurelian Crunteanu, Marie Froidevaux, Hamed Merdji, Sébastien Février   +6 more
doaj   +1 more source

Portable tunable interband cascade laser spectrometer using thin-film waveguides for food contaminant analysis

AIP Advances
Interband cascade lasers (ICL) are high output power mid-infrared light sources with low power consumption, serving as a viable alternative to more commonly applied quantum cascade lasers.
A. Femenias, M. Erdem, P. Fomina, J. Scheuermann, U. Blazhko, S. Freitag, A. J. Bosman, R. Weih, J. Koeth, A. Kohler, R. Krska, G. I. J. Salentijn, F. S. Ruggeri, B. Mizaikoff   +13 more
doaj   +1 more source

High Harmonic Generation Light Source with Polarization Selectivity and Sub-100-μm Beam Size for Time- and Angle-Resolved Photoemission Spectroscopy

Ultrafast Science
High-quality ultrafast light sources are critical for developing advanced time- and angle-resolved photoemission spectroscopy (TrARPES). While the application of high harmonic generation (HHG) light sources in TrARPES has increased substantially over the
Haoyuan Zhong, Xuanxi Cai, Changhua Bao, Fei Wang, Tianyun Lin, Yudong Chen, Sainan Peng, Lin Tang, Chen Gu, Zhensheng Tao, Hongyun Zhang, Shuyun Zhou   +11 more
doaj   +1 more source

High-power 2－5 μm mid-infrared ultrafast laser based on dual-wavelength femtosecond light source

Acta Physica Sinica
<sec>In the mid-infrared spectral range of 2–5 μm, ultrafast laser sources are indispensable for a number of scientific and industrial applications. In these applications, some unique properties of mid-infrared light are utilized, such as molecular overtone and combined tone absorption for sensitive gas detection, minimal atmospheric attenuation ...
Xueqi JIA, Xincai DIAO, Guoqing CHANG
openaire   +1 more source

High-resolution Observations of an X6.4 Solar Flare in the Mid-infrared

The Astrophysical Journal Letters
We present a unique observation of the X6.4-class flare SOL2024-02-22T22:34 using the Mid-InfraRed Imager (MIRI) at the Goode Solar Telescope. Three ribbon-like flare sources and one unidentified source were detected in MIRI’s two mid-infrared (mid-IR ...
Xu Yang, Wenda Cao, Meiqi Wang, Don Jennings, Jiong Qiu, Wen He, Solomon M. Perriyil, Vasyl Yurchyshyn, Lyndsay Fletcher, Paulo J. A. Simões, Murzy Jhabvala, Allen Lunsford, Xingyao Chen, Hugh Hudson   +13 more
doaj   +1 more source