Lasermikrofonit
Lasermikrofonit, also known as laser microphones or laser eavesdropping devices, are specialized audio surveillance tools that utilize a laser beam to detect sound vibrations. The fundamental principle involves directing a laser beam at a surface that vibrates in response to sound waves, such as a window pane or a thin wall. These vibrations cause minute changes in the angle or intensity of the reflected laser light. A sensitive optical detector, often a photodiode or a phototransistor, is then used to capture these subtle fluctuations in the reflected beam.
The detected optical signal is then converted into an electrical signal, which can be amplified and processed