scholarly journals Mid-Infrared Grayscale Metasurface Holograms

2020 ◽  
Vol 10 (2) ◽  
pp. 552
Author(s):  
Kedi Wu ◽  
Nicolas Kossowski ◽  
Haodong Qiu ◽  
Hong Wang ◽  
Qijie Wang ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Life Science ◽  
Infrared Imaging ◽  
Transmission Efficiency ◽  
Total Efficiency ◽  
Mid Infrared ◽  
Reflection Hologram ◽  
Sensing Application ◽  
Control Light ◽  
Opening Up

Optical metasurfaces composed of two-dimensional arrays of densely packed nanostructures can project arbitrary holographic images at mid-infrared frequency. Our approach employs silicon nanopillars to control light properties, including polarization-independent phase response working with high-transmission efficiency over the 2π-phase modulation range at wavelength 4.7 μm. We experimentally dispose nanopillars accordingly to phase-only profiles calculated using the conventional Gerchberg–Saxton algorithm and revealed the optical performances of our devices using a mid-infrared on-axis optical setup. The total efficiency of our reflection hologram reaches 81%. Our experimental results agree well with the image of the desired object, opening up new perspectives for mid-infrared imaging and displaying for military, life science and sensing application.

Mid‐Infrared Imaging of Orion BN/KL. II. Luminosity Sources, Extinction Distribution, and the Nature of IRc2

1998 ◽  
Vol 509 (1) ◽  
pp. 283-298 ◽  
Author(s):  
D. Y. Gezari ◽  
D. E. Backman ◽  
M. W. Werner
Keyword(s):  
Infrared Imaging ◽  
Mid Infrared

Mid-infrared phase modulation by intersubband transitions in quantum wells

1992 ◽  
Vol 39 (11) ◽  
pp. 2646
Author(s):  
E.B. Dupont ◽  
D. Delacourt ◽  
M. Papuchon
Keyword(s):  
Quantum Wells ◽  
Phase Modulation ◽  
Intersubband Transitions ◽  
Mid Infrared

Polarization-independent broadband achromatic metalens in the mid-infrared (3-5 μm) region

2021 ◽  
Author(s):  
Wenhui Xiong ◽  
Chenchen Sha ◽  
Jianping Ding
Keyword(s):  
Numerical Simulation ◽  
Infrared Imaging ◽  
Chromatic Aberration ◽  
Infrared Region ◽  
Mid Infrared ◽  
Light Manipulation ◽  
Wavefront Shaping ◽  
Polarization Independent

Abstract With superior capabilities for light manipulation and wavefront shaping, the metasurface recently has caught growing attention. However, the presence of chromatic aberration hinders metasurfaces, especially metalenses, from wider applications. Here, we design a polarization-independent broadband achromatic focusing metalens in the mid-infrared region, which covers continuous bands in 3-5 μm. Numerical simulation shows that different wavelengths can be focused to the same plane with a nearly diffraction-limited resolution, and can achieve an average focusing efficiency of nearly 70% in the whole bandwidth. We expect that our approach can underpin the development of integrated and mid-infrared imaging and detection.

scholarly journals Mid-infrared imaging of brown dwarfs in binary systems

2008 ◽  
Vol 480 (1) ◽  
pp. 193-198 ◽  
Author(s):  
K. Geißler ◽  
G. Chauvin ◽  
M. F. Sterzik
Keyword(s):  
Binary Systems ◽  
Infrared Imaging ◽  
Brown Dwarfs ◽  
Mid Infrared

scholarly journals Subarcsecond Mid‐Infrared Imaging of Two Post–Asymptotic Giant Branch 21 Micron Sources

2002 ◽  
Vol 573 (2) ◽  
pp. 720-727 ◽  
Author(s):  
Sun Kwok ◽  
Kevin Volk ◽  
Bruce J. Hrivnak
Keyword(s):  
Infrared Imaging ◽  
Asymptotic Giant Branch ◽  
Mid Infrared

scholarly journals Growth Optimization, Strain Compensation and Structure Design of InAs/GaSb Type-II Superlattices for Mid-Infrared Imaging

2013 ◽  
Vol 02 (02) ◽  
pp. 46-56 ◽  
Author(s):  
Yuxin Song ◽  
Shumin Wang ◽  
Carl Asplund ◽  
Rickard Marcks von Würtemberg ◽  
Hedda Malm ◽  
...  
Keyword(s):  
Infrared Imaging ◽  
Structure Design ◽  
Type Ii ◽  
Mid Infrared ◽  
Growth Optimization ◽  
Strain Compensation ◽  
Type Ii Superlattices

scholarly journals Chalcogenide Microstructured Optical Fibers for Mid-Infrared Supercontinuum Generation: Interest, Fabrication, and Applications

2018 ◽  
Vol 8 (9) ◽  
pp. 1637 ◽  
Author(s):  
Yiming Wu ◽  
Marcello Meneghetti ◽  
Johann Troles ◽  
Jean-Luc Adam
Keyword(s):  
Optical Fibers ◽  
Infrared Imaging ◽  
Supercontinuum Generation ◽  
Mid Infrared ◽  
Microstructured Fibers ◽  
Research Fields ◽  
Infrared Spectral ◽  
Purification Methods ◽  
Imaging And Spectroscopy ◽  
High Coherence

The mid-infrared spectral region is of great technical and scientific importance in a variety of research fields and applications. Among these studies, mid-infrared supercontinuum generation has attracted strong interest in the last decade, because of unique properties such as broad wavelength coverage and high coherence, among others. In this paper, the intrinsic optical properties of different types of glasses and fibers are presented. It turns out that microstructured chalcogenide fibers are ideal choices for the generation of mid-infrared supercontinua. The fabrication procedures of chalcogenide microstructured fibers are introduced, including purification methods of the glass, rod synthesis processes, and preform realization techniques. In addition, supercontinua generated in chalcogenide microstructured fibers employing diverse pump sources and configurations are enumerated. Finally, the potential of supercontinua for applications in mid-infrared imaging and spectroscopy is shown.

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