scholarly journals Probing Mid-Infrared Surface Interface States Based on Thermal Emission Without External Light Sources

2021 ◽  
Author(s):  
Fan Zhong ◽  
Ye Zhang ◽  
Shining Zhu ◽  
Hui Liu
Keyword(s):  
Thermal Emission ◽  
Interface States ◽  
Light Sources ◽  
Mid Infrared

New Mid-Infrared Light Sources

2012 ◽  
Vol 18 (1) ◽  
pp. 531-540 ◽  
Author(s):  
Jens Biegert ◽  
Philip K. Bates ◽  
Olivier Chalus
Keyword(s):  
Infrared Light ◽  
Light Sources ◽  
Mid Infrared

Chaos of interband cascade lasers in the mid-infrared regime

2020 ◽  
Author(s):  
Yu Deng ◽  
Zhuo-Fei Fan ◽  
Shiyuan Zhao ◽  
Frédéric Grillot ◽  
Cheng Wang
Keyword(s):  
Semiconductor Lasers ◽  
Near Infrared ◽  
Optical Feedback ◽  
Nonlinear Dynamical Systems ◽  
Initial Conditions ◽  
Electrical Power ◽  
High Sensitivity ◽  
Light Sources ◽  
Mid Infrared ◽  
Operation Conditions

Abstract Chaos in nonlinear dynamical systems is featured with irregular appearance and with high sensitivity to initial conditions. Near-infrared semiconductor lasers subject to optical feedback from an external reflector are popular chaotic light sources, which have enabled multiple applications. Here, we report the fully-developed chaos in a mid-infrared interband cascade laser with external optical feedback. The chaos leads to significant electrical power enhancement over a frequency span of 500 MHz. In addition, the laser also exhibits periodic oscillations or low-frequency fluctuations before producing chaos, depending on the operation conditions. This work paves the way for extending chaos investigations from the near-infrared regime to the mid-infrared regime, which can stimulate potential applications in this spectral range.

High power mid-infrared supercontiuum light sources based on fluorotellurite glass fibers (invited)

2018 ◽  
Vol 47 (8) ◽  
pp. 803004
Author(s):  
贾志旭 Jia Zhixu ◽  
姚传飞 Yao Chuanfei ◽  
李真睿 Li Zhenrui ◽  
贾世杰 Jia Shijie ◽  
赵志鹏 Zhao Zhipeng ◽  
...  
Keyword(s):  
High Power ◽  
Glass Fibers ◽  
Light Sources ◽  
Mid Infrared

Integration of Mid-Infrared Light Sources on Silicon-Based Waveguide Platforms in 3.5–4.7 μm Wavelength Range

2019 ◽  
Vol 25 (6) ◽  
pp. 1-9 ◽  
Author(s):  
Aditya Malik ◽  
Alexander Spott ◽  
Eric J. Stanton ◽  
Jonathan D. Peters ◽  
Jeremy Daniel Kirch ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Infrared Light ◽  
Light Sources ◽  
Mid Infrared ◽  
Silicon Based

scholarly journals VLTI/MIDI atlas of disks around low- and intermediate-mass young stellar objects

2018 ◽  
Vol 617 ◽  
pp. A83 ◽  
Author(s):  
J. Varga ◽  
P. Ábrahám ◽  
L. Chen ◽  
Th. Ratzka ◽  
K. É. Gabányi ◽  
...  
Keyword(s):  
Spatial Information ◽  
Thermal Emission ◽  
T Tauri Stars ◽  
Young Stellar Objects ◽  
Intermediate Mass ◽  
Disk Model ◽  
Mid Infrared ◽  
Disk Structure ◽  
T Tauri ◽  
Silicate Feature

Context. Protoplanetary disks show large diversity regarding their morphology and dust composition. With mid-infrared interferometry the thermal emission of disks can be spatially resolved, and the distribution and properties of the dust within can be studied. Aims. Our aim is to perform a statistical analysis on a large sample of 82 disks around low- and intermediate-mass young stars, based on mid-infrared interferometric observations. We intend to study the distribution of disk sizes, variability, and the silicate dust mineralogy. Methods. Archival mid-infrared interferometric data from the MIDI instrument on the Very Large Telescope Interferometer are homogeneously reduced and calibrated. Geometric disk models are used to fit the observations to get spatial information about the disks. An automatic spectral decomposition pipeline is applied to analyze the shape of the silicate feature. Results. We present the resulting data products in the form of an atlas, containing N band correlated and total spectra, visibilities, and differential phases. The majority of our data can be well fitted with a continuous disk model, except for a few objects, where a gapped model gives a better match. From the mid-infrared size–luminosity relation we find that disks around T Tauri stars are generally colder and more extended with respect to the stellar luminosity than disks around Herbig Ae stars. We find that in the innermost part of the disks (r ≲ 1 au) the silicate feature is generally weaker than in the outer parts, suggesting that in the inner parts the dust is substantially more processed. We analyze stellar multiplicity and find that in two systems (AB Aur and HD 72106) data suggest a new companion or asymmetric inner disk structure. We make predictions for the observability of our objects with the upcoming Multi-AperTure mid-Infrared SpectroScopic Experiment (MATISSE) instrument, supporting the practical preparations of future MATISSE observations of T Tauri stars.

Sign in / Sign up

Export Citation Format

Share Document