High Resolution Optical Surface Investigation based on Heterodyne Interferometry
نویسندگان
چکیده
منابع مشابه
Ground-based Optical/Infrared Interferometry: High Resolution, High Precision Imaging
Over the past decade, optical interferometry has demonstrated that its combination of high resolution and high precision can make unique contributions to astrophysics. Interferometers have grown in aperture size, baseline length, number of apertures, and spectral resolution. At the same time, methods to circumvent the limitations of interferometry are being introduced. Further increases in sens...
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 کاملResolution-enhanced optical coherence tomography based on classical intensity interferometry.
We propose a fourth-order interference scheme for optical coherence tomography operating with broadband incoherent (or quasi-incoherent) light. It is shown that using this proposal, an axial resolution improvement by a factor of sqrt 2 and a better sensitivity for weakly reflecting samples are obtained than with the standard second-order correlation scheme. From a practical perspective, we sugg...
متن کاملHighspeed multiplexed heterodyne interferometry.
Digitally enhanced heterodyne interferometry is a metrology technique that uses pseudo-random noise codes for modulating the phase of the laser light. Multiple interferometric signals from the same beam path can thereby be isolated based on their propagation delay, allowing one to use advantageous optical layouts in comparison to classic laser interferometers. We present here a high speed versi...
متن کاملImproved Small-Angle Sensor Based on Total-Internal Reflection and Surface Plasmon Resonance in Heterodyne Interferometry
In this paper, an improved small-angle sensor based on total-internal reflection (TIR) and surface plasmon resonance (SPR) in heterodyne interferometry (HI) is proposed. The improved small-angle sensor is designed as a reflective elongated prism made of BK7 glass. The shorter-side surface of the reflective elongated prism was coated with a 2 nm Ti film and a 45.5 nm Au film, but the longer-side...
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: International Journal of Optomechatronics
سال: 2012
ISSN: 1559-9612,1559-9620
DOI: 10.1080/15599612.2012.709312