Concept
Optical path length
Related publications (63)
Optical Diffraction Tomography Using Nearly In-Line Holography with a Broadband LED Source
Demetri Psaltis, Abhijit Roy, Ahmed Ayoub
We present optical tomography methods for a 3D refractive index reconstruction of weakly scattering objects using LED light sources. We are able to record holograms by minimizing the optical path difference between the signal and reference beams while sepa ...
MDPI2022Observation of SQUID-Like Behavior in Fiber Laser with Intra-Cavity Epsilon-Near-Zero Effect
Camille Sophie Brès, Marco Clementi, Jiaye Wu, Qian Li, Xuanyi Liu
Establishing relations between fundamental effects in far-flung areas of physics is a subject of great interest in the current research. Realization of a novel photonic system akin to the radio-frequency superconducting quantum interference device (RF-SQUI ...
WILEY-V C H VERLAG GMBH2022Vibration monitoring based on optical sensing of mechanical nonlinearities in glass suspended waveguides
Yves Bellouard, Tao Yang, Pieter Vlugter, Enrico Casamenti
Vibration monitoring plays a key role in numerous applications, including machinerypredictive maintenance, shock detection, space applications, packaging-integrity monitoring andmining. Here, we investigate mechanical nonlinearities inherently present in s ...
2021System and methods for differential imaging using a lock-in camera
Christophe Moser, Timothé Laforest, Damien Claude-Marie Loterie, Chiara Bonati
The present invention describes an imaging system that allows visualization of a wide range of samples both in terms of morphology and in terms of material (e.g. density distribution, varying chemical composition, or anything that induces a change of optic ...
2021Optical characterization of high numerical aperture microlenses for quality assessment and fabrication process optimization
Toralf Scharf, Wilfried Noell, Jeremy Béguelin
Accurate characterization of high numerical aperture aspheric microlenses currently is a nonstandard procedure that remains an open challenge. Here, we present and discuss a characterization method based on interferometric and point spread function measure ...
OPTICAL SOC AMER2020