Conversion of Light energy to Sound energy

  • #1

Main Question or Discussion Point

Is there a way to convert light energy to a sound energy?
I read an article and the URL is http://www.photonics.com/Article.aspx?AID=52646
It is described that nano material lenses are used.
Is there a much simpler way that I convert light to sound?
 

Answers and Replies

  • #3
SteamKing
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  • #4
Bobbywhy
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One simple way to convert light energy to sound energy:

Buy a greeting card that makes some sound when you open it. Remove the battery, and replace it with a Photovoltaic cell. Place the system in the sunlight.
 
  • #5
UltrafastPED
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When a crystal absorbs light some of the energy is converted to phonons - quantized sound. This happens all the time, but you cannot hear it. I did a lot of this during my dissertation research.

This was first done as a controlled experiment in 1958:
http://en.wikipedia.org/wiki/Mössbauer_effect
 
  • #6
Cthugha
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Is there a much simpler way that I convert light to sound?
A simple way? Coat something with a thin metal film and hit the metal with an intense laser pulse. It will heat quickly, creating a strain pulse in the sample, which is sound.

See, e.g. Nature Photonics 6, 30–34 (2012), "Laser mode feeding by shaking quantum dots in a planar microcavity" (http://www.nature.com/nphoton/journal/v6/n1/abs/nphoton.2011.269.html)
 

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