Extended Data Fig. 2: Schematic illustration of the mid-infrared pyrometric technique. | Nature

Extended Data Fig. 2: Schematic illustration of the mid-infrared pyrometric technique.

From: Electroluminescence and energy transfer mediated by hyperbolic polaritons

Extended Data Fig. 2

The technique uses optical chopping to detect the spectrally integrated signal (PMIR, integrated over the full spectral range of the detector) of an hBN-encapsulated graphene device (left, TR2 device with L × W = 35 × 35 μm2) due to the radiative emission of the SiO2 backgate. The setup was utilized to perform the pyrometric characterization of Fig. 3.

Source Data

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