Tag Archives: audio over laser

Audio transmission using Laser

Armand & Victor did an interesting experiment about sending audio over a laser beam. They used a 250mW diode laser, modulated its output with an audio signal, and aimed the modulated beam to a solar cell located at more than 400 meters away. The output of the solar cell is directly fed to an high power amplifier to reconstruct the audio. You wouldn’t believe the demodulated audio was surprisingly good quality.