Sound Recording by Laser Interferometry

Authors :: Balthasar Fischer
Ernst Wintner
Source :: Conference on Lasers and Electro-Optics/International Quantum Electronics Conference.
Publication Year :: 2009
Publisher :: OSA, 2009.
Abstract: A Fabry-Perot etalon is used to form a novel type of microphone. Refractive index dependant transmission is proportional to sound pressure over a large dynamic range. The current of the laser diode is tuned to take into account environmental influences.

Subjects :: Materials science
Laser diode
Microphone
business.industry
law.invention
Semiconductor laser theory
Sound recording and reproduction
Optics
Pressure measurement
law
business
Sound pressure
Refractive index
Fabry–Pérot interferometer

Database :: OpenAIRE
Journal :: Conference on Lasers and Electro-Optics/International Quantum Electronics Conference
Accession number :: edsair.doi...........1d6e6cfad060281878ff58624516e2b6
Full Text :: https://doi.org/10.1364/cleo.2009.jwa64