IR sensor sensitivity pushed into visible spectrum

XenICs, a spin-out from Belgian research lab IMEC, has used substrate thinning to push sensitivity in its infra-red sensors into the visible spectrum.

“Total wavelength area is now 0.4µm to 1.7µm,” said XenICs. “This extended optical feature is based on the removal of the InP substrate from the thermoelectrically cooled InGaAs sensor array. Instead of 125µm in the standard layout, the new chip after removing the InP substrate is only 5µm thick.”

XenICs specialises in advanced near- to long-wave infrared cameras and detectors (both cooled and uncooled), with the intention of tapping into what it sees as the vast markets of infrared detection and imaging applications.

According to the company’s vision statement: “Uncooled InGaAs-based devices will revolutionise the global markets for short wave infrared spectroscopy, imaging and non-contact temperature measurement. Uncooled bolometer-based products will revolutionize the markets for thermal imaging and thermography.”

IMEC describes itself as is Europe’s leading independent research centre in the field of micro- and nanoelectronics and nanotechnology.

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