Progetti di microfoni laser ... sentono le vibrazioni vetri

[Flavio58]

Fig. 1

Simplified Michaelson Interferometer

The Problem:
To detect sound within a room (having an outside window) at a distance. There are several methods that might accomplish this, with some fidelity; [1] however this page will describe the use of a LASER Microphone.
The use of a LASER to transduce sound from a window pane/glass is commonly used in movies which leave the mistaken impression that any such task is easy and the LASER Microphone, itself, is highly portable and easily set up. My recent experience is just the opposite.