Craig Beals and Glenn Govertsen from the Mr. G Science Show show how the signal for sound can be sent on a beam of light including how you can build your own laser sound machine. They explain how telecommunications work with different frequencies and pulses of the electromagnetic spectrum to send information across vast distances. This experiment demonstrates how cell phones, remote controls, radios, Bluetooth (and more) work.
Full materials list at https://www.bealsscience.com/single-post/2019/02/06/Sending-Sound-on-a-Lightwave
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This video is only for entertainment purposes. If you rely on the information outlined in this video, you assume responsibility for the results. As with any experiment, proceed at your own risk.