Reducing heat to optimize lasers' ability to enable windows that can easily transform into mirrors, or super high-speed computers that run on light

https://www.caltech.edu/about/news/transforming-materials-with-light

"lasers to rapidly and temporarily... transform the electronic properties of materials at the flick of a light switch... frequency of the laser is fine-tuned in such a way to markedly change the material's properties without imparting any unwanted heat... semiconductor called manganese phosphorus trisulphide, naturally absorbs only a small amount of light over a broad range of infrared frequencies... intense infrared laser pulses, each lasting about 10-13 seconds, to rapidly change the energy of electrons inside the material"