60 citations · 160 across the 7 of their papers we have counts for
7 papers
Far- and near-field photon noise limits to the detectivity of nanometer-thick thermal detectors
Olivier Merchiers, Aapo Varpula, Kirsi Tappura +2
Thermal-radiation detectors such as bolometers -- often found as thin, suspended films -- are intrinsically limited by their optical absorption properties and by their intrinsic th…
Infrared Bolometers Based on 40-nm-Thick Nano-Thermoelectric Silicon Membranes
Anton Murros, Kuura Sovanto, Jonna Tiira +3
State-of the-art infrared photodetectors operating in the mid- and long-wavelength infrared (MWIR and LWIR) are largely dominated by cryogenically cooled quantum sensors when the t…
Characterization of Predictable Quantum Efficient Detector over a wide range of incident optical power and wavelength
Mikhail Korpusenko, Farshid Manoocheri, Olli-Pekka Kilpi +5
We investigate the Predictable Quantum Efficient Detector (PQED) in the visible and near-infrared wavelength range. The PQED consists of two n-type induced junction photodiodes wit…
Nano-thermoelectric infrared bolometers
Aapo Varpula, Kirsi Tappura, Jonna Tiira +5
Infrared (IR) radiation detectors are used in numerous applications from thermal imaging to spectroscopic gas sensing. Obtaining high speed and sensitivity, low-power operation and…
Microfabricated sensor platform with through-glass vias for bidirectional 3-omega thermal characterization of solid and liquid samples
Corinna Grosse, Mohamad Abo Ras, Aapo Varpula +6
A novel microfabricated, all-electrical measurement platform is presented for a direct, accurate and rapid determination of the thermal conductivity and diffusivity of liquid and s…
Thermoelectric bolometers based on ultra-thin heavily doped single-crystal silicon membranes
Andrey V. Timofeev, Aapo Varpula, Andrey Shchepetov +5
We present ultra-thin silicon membrane thermocouple bolometers suitable for fast and sensitive detection of low levels of thermal power and infrared radiation at room temperature.…