Dynamic Measurement of Large Displacement Using Heterodyne Laser Interferometry.
نویسندگان
چکیده
منابع مشابه
Precision displacement measurement by active laser heterodyne interferometry.
We demonstrate an active laser heterodyne interferometer which can automatically compensate environmental disturbances and is capable of precision displacement measurement. Two Zeeman He-Ne lasers were employed. Laser II was used as the light source to stabilize the interferometer by using a piezomirror in a feedback loop. The hetereodyne signal of the two lasers was used to directly calibrate ...
متن کاملPicometer level displacement metrology with digitally enhanced heterodyne interferometry.
Digitally enhanced heterodyne interferometry is a laser metrology technique employing pseudo-random codes phase modulated onto an optical carrier. We present the first characterization of the technique's displacement sensitivity. The displacement of an optical cavity was measured using digitally enhanced heterodyne interferometry and compared to a simultaneous readout based on conventional Poun...
متن کاملExperimental comparison of autodyne and heterodyne laser interferometry using an Nd:YVO₄ microchip laser.
Using an Nd:YVO₄ microchip laser with a relaxation frequency in the megahertz range, we have experimentally compared a heterodyne interferometer based on a Michelson configuration with an autodyne interferometer based on the laser optical feedback imaging (LOFI) method regarding their signal-to-noise ratios. In the heterodyne configuration, the beating between the reference beam and the signal ...
متن کاملExperimental comparison of autodyne and heterodyne laser interferometry using a Nd:YVO4 microchip laser
Using a Nd:YVO 4 microchip laser with a relaxation frequency in the megahertz range, we have experimentally compared a heterodyne interferometer based on a Michelson configuration with an autodyne interferometer based on the laser optical feedback imaging (LOFI) method regarding their signal to noise ratios. In the heterodyne configuration, the beating between the reference beam and the signal ...
متن کاملImaging of Surface Vibrations Using Heterodyne Interferometry
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Kimmo Kokkonen Name of the doctoral dissertation Imaging of Surface Vibrations Using Heterodyne Interferometry Publisher School of Science Unit Department of Applied Physics Series Aalto University publication series DOCTORAL DISSERTATIONS 112/2014 Field of research Applied Physics Manuscript submitted 15 October 2013 Date of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Japan Society for Precision Engineering
سال: 1998
ISSN: 1882-675X,0912-0289
DOI: 10.2493/jjspe.64.1132