Wu, Yangbo, Qu, Zhibo, Osman, Ahmed, Cao, Wei, Khokhar, Ali, Soler Penadés, Jordi, Muskens, Otto, Mashanovich, Goran and Nedeljković, Miloš (2019) Mid-infrared nanometallic antenna assisted silicon waveguide based bolometers. ACS Photonics, 6 (12), 3253-3260. (doi:10.1021/acsphotonics.9b01198).
Abstract
The mid-infrared (MIR) wavelength region is attracting more and more research for applications such as medical diagnostics, environmental monitoring, and free space communications. In the MIR, thermal detectors play an important role because they can operate over a large wavelength range, can be fabricated using CMOS compatible processes, and do not require cooling. Today no other MIR detector technology is able to fill this gap. We demonstrate the first uncooled silicon waveguide-based bolometers, in the Silicon-on-Insulator (SOI) and suspended silicon waveguide platforms. The bolometers comprise gold plasmonic antennas on the waveguide surface that heat up when they absorb light, and amorphous silicon thermometers (formed by ion implantation), whose electrical resistance changes by 0.90 ± 0.26 % K-1 when they are heated. We show that suspending the bolometers improves their performance, and achieve sensitivities of up to 1.13 ± 0.04 % change in resistance per milliwatt of input power, with a noise equivalent power of 66 μW/√Hz. Calculations suggest the NEP could in future, be further reduced by 4 orders of magnitude.
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- Current Faculties > Faculty of Engineering and Physical Sciences > School of Physics and Astronomy > Quantum, Light and Matter Group
School of Physics and Astronomy > Quantum, Light and Matter Group - Current Faculties > Faculty of Engineering and Physical Sciences > Zepler Institute for Photonics and Nanoelectronics > Nanophotonics Group > Photonic Systems Circuits and Sensors Group
Zepler Institute for Photonics and Nanoelectronics > Nanophotonics Group > Photonic Systems Circuits and Sensors Group - Current Faculties > Faculty of Engineering and Physical Sciences > Zepler Institute for Photonics and Nanoelectronics
Zepler Institute for Photonics and Nanoelectronics - Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > Institute for Life Sciences (pre 2018 reorg)
Current Faculties > Faculty of Environmental and Life Sciences > Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg)
Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg)
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