scholarly journals Optimal spectral inversion of atmospheric radiometric measurements in the near-UV to near-IR range: A case study

2002 ◽  
Vol 10 (1) ◽  
pp. 70 ◽  
Author(s):  
Didier Fussen ◽  
Filip Vanhellemont ◽  
Christine Bingen
Keyword(s):  
Radiometric Measurements ◽  
Spectral Inversion ◽  
Near Ir ◽  
Near Ir Range

A novel ruthenium(ii) complex for two-photon absorption-based optical power limiting in the near-IR range

2011 ◽  
Vol 13 (38) ◽  
pp. 17304 ◽  
Author(s):  
Mickaël Four ◽  
Didier Riehl ◽  
Olivier Mongin ◽  
Mireille Blanchard-Desce ◽  
Latévi Max Lawson-Daku ◽  
...  
Keyword(s):  
Optical Power ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Near Ir ◽  
Optical Power Limiting ◽  
Near Ir Range

On the possibility of designing a high-resolution heterodyne spectrometer for near-IR range on the basis of a tunable diode laser

2012 ◽  
Vol 42 (3) ◽  
pp. 244-249 ◽  
Author(s):  
A Yu Klimchuk ◽  
Aleksandr I Nadezhdinskii ◽  
Ya Ya Ponurovskii ◽  
Yu P Shapovalov ◽  
A V Rodin
Keyword(s):  
High Resolution ◽  
Diode Laser ◽  
Tunable Diode Laser ◽  
Near Ir ◽  
Heterodyne Spectrometer ◽  
Near Ir Range

scholarly journals Detection of O2 Produced Abiotically on Habitable but Lifeless Planets around M-dwarfs

2012 ◽  
Vol 8 (S293) ◽  
pp. 39-45 ◽  
Author(s):  
Tong Li ◽  
Feng Tian
Keyword(s):  
Radiative Transfer ◽  
Molecular Oxygen ◽  
Uv Spectra ◽  
Radiative Transfer Model ◽  
Transfer Model ◽  
Hitran Database ◽  
M Dwarfs ◽  
Near Ir ◽  
Habitable Zones ◽  
Near Ir Range

AbstractHigh atmospheric abundances of oxygen has been widely considered to be a reliable biosignature for life on exoplanets in the habitable zones of all types of stars. Recently it was proposed that the unique UV spectra of observed planet-hosting M dwarfs could lead to the buildup of molecular oxygen in the atmospheres of habitable but lifeless planets around these stars (Tian et al. 2014). However, the detectability of the accumulated O2 was not modeled. In this work we developed a new line by line radiative transfer model based on HITRAN database and used the model to simulate the reflectivity in the visible and near IR range. We show that abiotically produced and maintained O2 in the 0.2% level is observable at 13105 cm−1 (0.76 μm) with the spectra resolution of 70.

A study of distributed dielectric bragg reflectors for vertically emitting lasers of the near-IR range

2016 ◽  
Vol 42 (10) ◽  
pp. 1049-1053 ◽  
Author(s):  
S. A. Blokhin ◽  
M. A. Bobrov ◽  
A. G. Kuzmenkov ◽  
A. A. Blokhin ◽  
A. P. Vasil’ev ◽  
...  
Keyword(s):  
Bragg Reflectors ◽  
Near Ir ◽  
Emitting Lasers ◽  
Near Ir Range

scholarly journals High-speed format 1000BASE-SX / LX transmission through the atmosphere by vortex beams near IR range with help modified SFP-transmers DEM-310GT

2020 ◽  
Vol 44 (4) ◽  
pp. 578-581
Author(s):  
S.V. Karpeev ◽  
V.V. Podlipnov ◽  
N.A. Ivliev ◽  
S.N. Khonina
Keyword(s):  
Optical Communication ◽  
High Speed ◽  
Near Infrared ◽  
Phase Plate ◽  
Vortex Beam ◽  
Optical Communication System ◽  
Near Ir ◽  
Vortex Beams ◽  
Spiral Phase ◽  
Near Ir Range

The possibility of constructing a near-infrared atmospheric optical communication system based on a pair of media converters of a signal format 100Base-TX / 1000BASE-T to format 1000BASE-SX / LX with SFP transceivers DEM-310GT was experimentally investigated. The FAN-OUT TUBING FTB900 SN-Y4 fiber cable connector, coming from the receiving radiation collimator for matching with the DEM-310GT transceiver, was modified. The transmitting radiation collimator is supplemented by a spiral phase plate to form a vortex beam. The influence of atmospheric influence on the data rate is analyzed.

scholarly journals Люминесценция Pd и Pt бензогидропорфиразинов в ближнем ИК диапазоне

2020 ◽  
Vol 128 (11) ◽  
pp. 1657
Author(s):  
П.П. Першукевич ◽  
Д.И. Волкович ◽  
Е.А. Макарова ◽  
Е.А. Лукьянец ◽  
К.Н. Соловьёв
Keyword(s):  
Platinum Complexes ◽  
Palladium Complexes ◽  
Structural Factors ◽  
Near Ir ◽  
Small Quantum ◽  
Long Time ◽  
First Time ◽  
Visible Area ◽  
Near Ir Range ◽  
Phosphorescence Spectra

Phosphorescence in the near-IR range under stationary lamp excitation was studied of three palladium and three platinum complexes of benzocondensed hydroporphyrazine phthalocyanine analogues in which molecule one or two isoindole fragments are replaced by a hydrogenated pyrrole ring, giving macrocycles of photosynthetic pigments analogues of chlorin, bacteriochlorin and isobacteriochlorin types. For the first time, the phosphorescence spectra of trans-dibenzotetrahydroporphyrazines (for both platinum and palladium) have been registered, which detection failed during long time due to the record removal of 0-0 bands from the visible area (1.67 and 1.52 µm for Pd and Pt), and also because of the small quantum yield of phosphorescence. The fluorescence of these complexes was also detected.in the near-IR range. On the basis of comparison of experimental results with own and literature data for palladium complexes of a number of tetrapyrroles is shown the approximate additivity of the influence of structural factors — hydrogenation of pyrrole rings, aza- and benzo substitution — on the energy of the lower triplet state T1. The information obtained is essential for targeted creation of emitters in the near-IR range (1.0-1.7 µm).

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