Title :
Constant-phase scanning heterodyne interferometer
Author :
Park, Youngkyu ; Park, Jun Gyu ; Cho, Kyuman
Author_Institution :
Dept. of Phys., Sogang Univ., Seoul, South Korea
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
A constant-phase scanning heterodyne interferometer scheme is introduced. The phase difference between the probe beam and reference beam is locked at the constant value by using a feedback control loop, by which nonlinearity and π-ambiguity of the phase measurements are minimized.
Keywords :
heterodyne detection; optical testing; spectroscopy; π-ambiguity; constant value; constant-phase scanning heterodyne interferometer; feedback control loop; phase difference; probe beam; reference beam; Feedback control; Measurement by laser beam; Optical diffraction; Optical interferometry; Optical polarization; Phase measurement; Probes;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6194141
