Title :
Measurements on a Single Crystal Photo-Elastic Modulator
Author :
F. Bammer;J. Petelin;R. Petkovšek
Author_Institution :
Institute for Production Engineering and Laser Technology, Vienna University of Technology, Guß
fDate :
5/1/2011 12:00:00 AM
Abstract :
The retardation-, current-, and displacement-amplitudes of a Single Crystal Photo-Elastic Modulator (SCPEM) made of a LiTaO3-crystal with a resonance frequency of 127.16kHz is measured with interferometry and the underlying theory verified. It is found that the retardation amplitude and the current amplitude are exactly linearly correlated. The relation is independent from the crystal damping and from the excitation voltage. A control of the current is therefore sufficient to control the crystal retardation.
Keywords :
"Crystals","Modulation","Current measurement","Voltage measurement","Displacement measurement","Damping"
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Print_ISBN :
978-1-4577-1223-4
DOI :
10.1364/CLEO_AT.2011.JTuI80
