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News from the lab! 🤩 Is it possible to switch a material from being an absorber to an amplifier just by changing the phase of light? By treating a thin film of ITO as a time-varying medium, we achieved 400% amplification and 80% absorption within the same structure. www.nature.com/articles/s41...
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The researchers show that a subwavelength film of indium tin oxide, the bulk permittivity of which is strategically modulated via optical pumping, can be dynamically tuned to act as both a non-resonan...
Optical coherent perfect absorption and amplification in a time-varying medium - Nature Photonics
www.nature.com
Riccardo Sapienza
