New device uses 2D material to up-convert infrared light to visible light
Indian Institute of Science researchers create a device converting infrared to visible light using gallium selenide layers. Efficient up-conversion demonstrated, promising compact and improved infrared imaging applications without bulky sensors.
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Researchers at the Indian Institute of Science (IISc) have developed a new device using a 2D material to up-convert infrared light into the visible spectrum. This innovation allows for the conversion of short infrared light to visible light, expanding the applications of up-conversion technology in defense and optical communications. The device, a non-linear optical mirror stack, consists of gallium selenide layers on a gold reflective surface with a silicon dioxide layer in between. Unlike traditional infrared imaging methods, this device offers a more efficient and compact solution for up-conversion imaging. The team successfully demonstrated the up-conversion of infrared light at 1550 nm to visible light at 622 nm using this device. By leveraging the high optical nonlinearity of gallium selenide, the researchers achieved efficient up-conversion with a thin 45 nm layer. Their work opens up possibilities for improved infrared imaging without the need for bulky and export-restricted infrared sensors, potentially revolutionizing various applications that rely on infrared light sensing.
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1 commentshttps://news.ycombinator.com/item?id=40332064 :
> predict e.g. [portable] low-field MRI with NIRS Infrared and/or Ultrasound?
> Idea: Do sensor fusion with all available sensors timecoded with landmarks, and then predict the expensive MRI/CT from low cost sensors [such as this coherent upconverter]
> Are there implied molecular structures that can be inferred from low-cost {NIRS, Light field, [...]} sensor data?
> Task: Learn a function f() such that f(lowcost_sensor_data) -> expensive_sensor_data
> FWIU OpenWater has moved to NIRS+Ultrasound for ~ live in surgery MRI-level imaging and now treatment?
> FWIU certain Infrared light wavelengths cause neuronal growth; and Blue and Green inhibit neuronal growth.
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