New research confirms a theory: high-frequency acoustic waves can be converted to light
Researchers at the Lawrence Livermore National Laboratory in California successfully converted sound waves to light radiation by reversing a process that transforms electricity to sound, which is commonly used in cell phones. This is the first time that sound has been converted to light. The findings, which were published this week in Nature Physics, could improve how computer chips, LEDs, and transistors are made, and also have applications in ultrafast materials science and terahertz radiation (T-ray) generation.
The research team initially predicted that the conversion was possible around a year ago, using computer modeling, and has been trying to confirm it in the lab ever since.