Abstract

We experimentally demonstrated that the technique to stabilize the output signal by harmonic intensities is useful in heterodyne detection with an incoherent light source such as a halogen lamp. The relation between the relative standard deviation of an output signal and the fluctuation of the light intensity is analyzed and simulated. Using the fundamental to sixth harmonics increases the stabilities of output signal approximately 3 times, and subtracting the relative standard deviation of the intensity of light source enhances the stabilities 49 times. The fluctuating phase that is due to the fluctuating frequency and temperature and its power spectrum density for an interferometer is also calculated with the Allan variance.

© 2002 Optical Society of America

Two-longitudinal-mode He-Ne laser for heterodyne interferometers to measure displacement

Min-Seok Kim and Seung-Woo Kim
Appl. Opt. 41(28) 5938-5942 (2002)

Air-dispersion measurement by second-harmonic heterodyne interferometry

Yves Salvadé, René Dändliker, Alain Courteville, and Michaël Zickar
Opt. Lett. 27(16) 1424-1426 (2002)

Geometrical tomographic imaging of refractive indices through turbid media by a wavelength-scanning heterodyne interference confocal microscope

Yuuki Watanabe and Ichirou Yamaguchi
Appl. Opt. 41(13) 2414-2419 (2002)

Derivation of a Monte Carlo method for modeling heterodyne detection in optical coherence tomography systems

Andreas Tycho, Thomas M. Jørgensen, Harold T. Yura, and Peter E. Andersen
Appl. Opt. 41(31) 6676-6691 (2002)

Coaxial Mirau interferometer

Adrian Dobroiu, Hiroshi Sakai, Hitoshi Ootaki, Manabu Sato, and Naohiro Tanno
Opt. Lett. 27(13) 1153-1155 (2002)