Title :
A new scanning heterodyne interferometer scheme for simultaneous mapping of topography and effective local reflection coefficient of a surface
Author :
Kwon, Kang Hyuk ; Kim, Bong Soo ; Cho, Kyuman
Author_Institution :
Dept. of Phys., Sogang Univ., Seoul
Abstract :
This paper presents a scanning heterodyne I/Q-interferometer scheme which can simultaneously map the phase and the amplitude change while scanning the probe beam over the surface. A commercial I/Q-demodulator in RF-band is used for demodulating the induced phase and amplitude change of the heterodyne beat signal between the probe and reference beams.
Keywords :
demodulation; heterodyne detection; light interferometry; light reflection; surface topography measurement; I/Q-demodulator; I/Q-interferometer; amplitude change mapping; heterodyne beat signal; local reflection coefficient; phase mapping; scanning heterodyne interferometer; surface topography mapping; Biomedical optical imaging; Microscopy; Optical interferometry; Optical mixing; Optical reflection; Optical surface waves; Probes; Simultaneous localization and mapping; Spatial resolution; Surface topography;
Conference_Titel :
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the
Conference_Location :
Acapulco
Print_ISBN :
978-1-4244-1931-9
Electronic_ISBN :
978-1-4244-1932-6
DOI :
10.1109/LEOS.2008.4688820
