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13 papers · 1 filter
Low coherence interferometric detection of the spectral dependence of the retro-reflection coefficient of an anti-reflective coated interface
Michel Lequime, Imran Khan, Myriam Zerrad +1
The measurement of very low reflection coefficients of anti-reflective coated interfaces has become a key issue for the realization of precision instruments such as the giant inter…
Gas kinematics around filamentary structures in the Orion B cloud
Mathilde Gaudel, Jan H. Orkisz, Maryvonne Gerin +27
Understanding the initial properties of star-forming material and how they affect the star formation process is key. From an observational point of view, the feedback from young hi…
Single atom in a superoscillatory optical trap
Hamim Mahmud Rivy, Syed A. Aljunid, Emmanuel Lassalle +2
Optical tweezers have become essential tools to manipulate atoms or molecules at a single particle level. However, using standard diffracted-limited optical systems, the transverse…
Long time behaviour of the solution of Maxwell's equations in dissipative generalized Lorentz materials (I) A frequency dependent Lyapunov function approach
Maxence Cassier, Patrick Joly, Luis Alejandro Rosas Martínez
It is well-known that electromagnetic dispersive structures such as metamaterials can be modelled by generalized Drude-Lorentz models. The present paper is the first of two article…
Fast interrogation wavelength tuning for all-optical photoacoustic imaging
Jérémy Saucourt, Antonin Moreau, Julien Lumeau +2
Optical detection of ultrasound for photoacoustic imaging provides large bandwidth and high sensitivity at high acoustic frequencies. Higher spatial resolutions can therefore be ac…
Observation of polarization singularities and topological textures in sound waves
R. D. Muelas-Hurtado, K. Volke-Sepulveda, J. L. Ealo +4
Polarization singularities and topological polarization structures are generic features of inhomogeneous vector wave fields of any nature. However, their experimental studies mostl…