The Indian Institute of Science (IISc) researchers have developed a device to increase or up-convert the frequency of short infrared light to the visible range.
The up-conversion of light will have many applications, especially in defence and optical communications.
The human eye can only see light in the visible spectrum, it cannot see infrared light.
The IISC’s team used a 2D material to design a non-linear optical mirror stack for the up-conversion.
The IISC’s team used a method that involves feeding an input infrared signal along with a pump beam onto the mirror stack.
With this method, they have been able to up-convert infrared light of a wavelength of around 1,550 nm to 622 nm visible light.
The researchers are planning to extend their work to up-converting light of longer wavelengths.
