Title :
Sound recording by laser interferometry
Author :
Fischer, Balthasar ; Wintner, Ernst
Author_Institution :
Photonics Inst., Vienna Univ. of Technol., Vienna, Austria
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.
Keywords :
Fabry-Perot interferometers; audio recording; light interferometry; microphones; refractive index; semiconductor lasers; Fabry-Perot etalon; laser diode; laser interferometry; microphone; refractive index; sound pressure; sound recording; Diode lasers; Fabry-Perot; Interferometry; Microphones; Mirrors; Optical receivers; Optical refraction; Optical sensors; Refractive index; Vertical cavity surface emitting lasers; (120.2230) Fabry-Perot; (280.5475) pressure measurement;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
