scholarly journals Optimized mid-infrared thermal emitters for applications in aircraft countermeasures

AIP Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 125112 ◽  
Author(s):  
Simón G. Lorenzo ◽  
Chenglong You ◽  
Christopher H. Granier ◽  
Georgios Veronis ◽  
Jonathan P. Dowling
Keyword(s):  
Mid Infrared ◽  
Thermal Emitters

scholarly journals Sensitivity-Enhanced Fourier Transform Mid-Infrared Spectroscopy Using a Supercontinuum Laser Source

2020 ◽  
Vol 74 (4) ◽  
pp. 485-493 ◽  
Author(s):  
Ivan Zorin ◽  
Jakob Kilgus ◽  
Kristina Duswald ◽  
Bernhard Lendl ◽  
Bettina Heise ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Ir Spectroscopy ◽  
Path Length ◽  
Low Noise ◽  
Noise Levels ◽  
Mid Infrared ◽  
High Brightness ◽  
Thermal Emitters ◽  
Ft Ir ◽  
Supercontinuum Laser

Fourier transform infrared (FT-IR) spectrometers have been the dominant technology in the field of mid-infrared (mid-IR) spectroscopy for decades. Supercontinuum laser sources operating in the mid-IR spectral region now offer the potential to enrich the field of FT-IR spectroscopy due to their distinctive properties, such as high-brightness, broadband spectral coverage and enhanced stability. In our contribution, we introduce this advanced light source as a replacement for conventional thermal emitters. Furthermore, an approach to efficient coupling of pulsed mid-IR supercontinuum sources to FT-IR spectrometers is proposed and considered in detail. The experimental part is devoted to pulse-to-pulse energy fluctuations of the applied supercontinuum laser, performance of the system, as well as the noise and long-term stability. Comparative measurements performed with a conventional FT-IR instrument equipped with a thermal emitter illustrate that similar noise levels can be achieved with the supercontinuum-based system. The analytical performance of the supercontinuum-based FT-IR spectrometer was tested for a concentration series of aqueous formaldehyde solutions in a liquid flow cell (500 µm path length) and compared with the conventional FT-IR (130 µm path length). The results show a four-times-enhanced detection limit due to the extended path length enabled by the high brightness of the laser. In conclusion, FT-IR spectrometers equipped with novel broadband mid-IR supercontinuum lasers could outperform traditional systems providing superior performance, e.g., interaction path lengths formerly unattainable, while maintaining low noise levels known from highly stable thermal emitters.

Optimized Mid-Infrared Thermal Emitters for Applications in Aircraft Countermeasures

2016 ◽  
Author(s):  
Simón G. Lorenzo ◽  
Chenglong You ◽  
Christopher H. Granier ◽  
Georgios Veronis ◽  
Jonathan P. Dowling
Keyword(s):  
Mid Infrared ◽  
Thermal Emitters

scholarly journals High-Q mid-infrared thermal emitters operating with high power-utilization efficiency

2016 ◽  
Vol 24 (13) ◽  
pp. 15101 ◽  
Author(s):  
Takuya Inoue ◽  
Menaka De Zoysa ◽  
Takashi Asano ◽  
Susumu Noda
Keyword(s):  
High Power ◽  
Utilization Efficiency ◽  
Mid Infrared ◽  
High Q ◽  
Thermal Emitters

scholarly journals Wideband mid-infrared thermal emitter based on stacked nanocavity metasurfaces

2021 ◽  
Author(s):  
Tun Cao ◽  
Meng Lian ◽  
Xianchao Lou ◽  
Kuan Liu ◽  
Yaoming Guo ◽  
...  
Keyword(s):  
Thermal Radiation ◽  
Thermal Imaging ◽  
Polarized Light ◽  
Infrared Light ◽  
Light Sources ◽  
Mid Infrared ◽  
Atmospheric Window ◽  
Thermal Emitters ◽  
Thermal Emitter ◽  
Promising Avenue

Abstract Efficient thermal radiation in the mid-infrared (M-IR) region is of supreme importance for many applications including thermal imaging and sensing, thermal infrared light sources, infrared spectroscopy, emissivity coatings, and camouflage. The capability of controlling light makes metasurface an attractive platform for infrared applications. Recently, different metamaterials have been proposed to achieve high thermal radiation. To date, broadening of the radiation bandwidth of metasurface emitter (meta-emitter) has become a key goal to enable extensive applications. We experimentally demonstrate a broadband M-IR thermal emitter using stacked nanocavity metasurface consisting of two pairs of circular-shaped dielectric (Si3N4) – metal (Au) stacks. A high thermal radiation can be obtained by engineering the geometry of nanocavity metasurface. Such a meta-emitter provides wideband and broad angular absorptance of both p- and s-polarized light, offering a wideband thermal radiation with an average emissivity of more than 80% in the M-IR atmospheric window of 8–14 μm. The experimental illustration together with theoretical framework places a basis for designing broadband thermal emitters, which, as anticipated, will initiate a promising avenue to M-IR source.

Novel Mid-Infrared Metamaterial Thermal Emitters for Optical Gas Sensing

2018 ◽  
Author(s):  
Yongkang Gong ◽  
Sang Soon Oh ◽  
Diana L. Huffaker ◽  
Nigel Copner
Keyword(s):  
Gas Sensing ◽  
Mid Infrared ◽  
Thermal Emitters ◽  
Optical Gas Sensing

Single-peak narrow-bandwidth mid-infrared thermal emitters based on quantum wells and photonic crystals

2013 ◽  
Vol 102 (19) ◽  
pp. 191110 ◽  
Author(s):  
Takuya Inoue ◽  
Menaka De Zoysa ◽  
Takashi Asano ◽  
Susumu Noda
Keyword(s):  
Photonic Crystals ◽  
Quantum Wells ◽  
Single Peak ◽  
Mid Infrared ◽  
Narrow Bandwidth ◽  
Thermal Emitters

Wavelength-tunable mid-infrared thermal emitters with a non-volatile phase changing material

Nanoscale ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 4415-4420 ◽  
Author(s):  
Kaikai Du ◽  
Lu Cai ◽  
Hao Luo ◽  
Yue Lu ◽  
Jingyi Tian ◽  
...  
Keyword(s):  
Mid Infrared ◽  
Nano Scale ◽  
Wavelength Tunable ◽  
Thermal Emitters ◽  
Volatile Phase ◽  
Thermal Sources

Two wavelength-tunable thermal sources with sustained high emissivities are demonstrated with nano-scale films and phase changing materials.

scholarly journals Wavelength-Switchable Mid-Infrared Narrowband Thermal Emitters Based on Quantum Wells and Photonic Crystals

2018 ◽  
Vol E101.C (7) ◽  
pp. 545-552
Author(s):  
Takuya INOUE ◽  
Menaka DE ZOYSA ◽  
Takashi ASANO ◽  
Susumu NODA
Keyword(s):  
Photonic Crystals ◽  
Quantum Wells ◽  
Mid Infrared ◽  
Thermal Emitters
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