公开(公告)号：EP3715805A1

公开(公告)日：2020-09-30

申请号：EP19305382.4

申请日：2019-03-26

申请人： UNIVERSITE PARIS DESCARTES ,  SORBONNE UNIVERSITE ,  Ecole Polytechnique ,  Centre National de la Recherche Scientifique ,  Commissariat à l'Energie Atomique et aux Energies Alternatives

发明人： GUILLON, Marc ,  BERTO, Pascal ,  PAPADOPOULOS, Dimitris ,  TESSIER, Gilles

IPC分类号： G01J9/00

摘要： A method for determining wavefront shapes of a multi-spectral signal light beam (12) from a single signal image acquisition of said multi-spectral signal light beam (12),
with a device (16) comprising an optical assembly made at least of an optical mask (14) and an imaging sensor (18), notably a matrix imaging sensor, for generating and recording intensity patterns of incident beams, by having these beams reflect on, or propagate through, the optical mask,
the optical mask having the optical properties:
i) to cause the intensity pattern to depend on the wavefront shape, so that a tilt applied to the wavefront shape results in a displacement amount of the intensity pattern,
ii) to produce uncorrelated intensity patterns over at least one surface area A of the imaging sensor, for a plurality of respective incident monochromatic beams of different wavelengths having a same wavefront shape.

公开(公告)号：EP3948191A1

公开(公告)日：2022-02-09

申请号：EP20705986.6

申请日：2020-02-21

申请人： Université de Paris ,  SORBONNE UNIVERSITE ,  Ecole Polytechnique ,  Centre national de la recherche scientifique ,  Commissariat à l'Energie Atomique et aux Energies Alternatives

发明人： GUILLON, Marc ,  BERTO, Pascal ,  PAPADOPOULOS, Dimitris ,  TESSIER, Gilles

IPC分类号： G01J9/00

公开(公告)号：EP3951338A1

公开(公告)日：2022-02-09

申请号：EP20305898.7

申请日：2020-08-04

申请人： Université de Paris ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  SORBONNE UNIVERSITE ,  Institut National de la Santé et de la Recherche Médicale

发明人： GUILLON, Marc ,  BERTO, Pascal

IPC分类号： G01J9/00

摘要： A method for analyzing wavefront-gradient data of a light beam, the light beam containing at least one optical vortex in order to estimate the contribution of the optical vortices to the wavefront, the method comprising:
providing a phase-gradient map g of the wavefront of the light beam,
generating a Laplacian of a vector potential based on the phase gradient map g, the resulting Laplacian of the vector potential map, called "Laplacian map", exhibiting peaks,
the location of each peak corresponding to the location of an optical vortex and the integral of the peak being proportional to a topological charge n of said optical vortex,
computing a singular phase map ϕs based on the topological charge n and location of each optical vortex computed in steps i) and ii), the singular phase ϕs map being representative of the contribution of the optical vortex.

公开(公告)号：EP4193133A1

公开(公告)日：2023-06-14

申请号：EP21743548.6

申请日：2021-07-23

申请人： Université Paris Cité ,  Centre National de la Recherche Scientifique ,  SORBONNE UNIVERSITE ,  Institut National de la Santé et de la Recherche Médicale

发明人： GUILLON, Marc ,  BERTO, Pascal

IPC分类号： G01J9/00

公开(公告)号：EP3974792A1

公开(公告)日：2022-03-30

申请号：EP20306121.3

申请日：2020-09-29

申请人： Université de Paris ,  Centre National de la Recherche Scientifique (CNRS) ,  Institut National de la Santé et de la Recherche Médicale (INSERM) ,  Sorbonne Université

发明人： GUILLON, Marc ,  TESSIER, Gilles ,  WU, Tengfei ,  BERTO, Pascal

IPC分类号： G01J9/00

摘要： A method for determining wavefront shapes of N angular channels C L of different propagation directions P L , said propagation directions P L being determined by a mean propagation direction vector u L ⇀ , from a single signal image acquisition I(x,y) of a multi-angular signal light beam containing said angular channels, each angular channel Ci being separated from other angular channels Cj by an angular separation Δα ij defined by Δ α ij = arccos u ι ⇀ u J ⇀ , where "." stands for the inner product between u ι ⇀ and u J ⇀ .

公开(公告)号：EP2979080A1

公开(公告)日：2016-02-03

申请号：EP14718523.5

申请日：2014-03-25

申请人： Université d'Aix Marseille ,  Centre National de la Recherche Scientifique (Etablissement Public)

发明人： BERTO, Pascal ,  ANDRESEN, Esben ,  RIGNEAULT, Hervé

IPC分类号： G01N21/65

CPC分类号： G01N21/65 ,  G01N2021/655 ,  G01N2201/06113

摘要： According to one aspect, the invention relates to a device for detecting a resonant nonlinear optical signal of Stimulated Raman Scattering type (SRS) induced in a sample. The device comprises electro-optical means for causing the interaction, in the sample, at a first modulation frequency, of trains of light pulses (14, 12) of angular frequencies ω
1 and ω
2 and, at a second modulation frequency, trains of light pulses (12, 16) of angular frequencies ω
2 and ω
3 , such that ω
2 - ω1 = ω
3 - ω
2 = Ω
R where Ω
R is an angular frequency of molecular vibrational resonance of the sample. The device furthermore comprises means of synchronous detection (70, 80) at the first and second modulation frequencies of nonlinear optical signals resulting from the interaction of the light pulses in the sample and means of electronic processing (80) making it possible on the basis of electronic signals resulting from the synchronous detection to obtain a signal characteristic of the molecular vibrational resonance of the sample.

公开(公告)号：EP2979080B1

公开(公告)日：2017-03-08

申请号：EP14718523.5

申请日：2014-03-25

申请人： Université d'Aix Marseille ,  Centre National de la Recherche Scientifique (Etablissement Public)

发明人： BERTO, Pascal ,  ANDRESEN, Esben ,  RIGNEAULT, Hervé

IPC分类号： G01N21/65

CPC分类号： G01N21/65 ,  G01N2021/655 ,  G01N2201/06113

公开(公告)号：EP4407287A1

公开(公告)日：2024-07-31

申请号：EP23305117.6

申请日：2023-01-30

申请人： Université Paris Cité ,  Centre national de la recherche scientifique ,  Ecole Centrale de Marseille

发明人： BERTO, Pascal ,  BLOCHET, Baptiste ,  ALONSO GONZALEZ, Miguel Angel ,  GUILLON, Marc

IPC分类号： G01J9/02 ,  G01J4/04

CPC分类号： G01J4/04 ,  G01J9/0215 ,  G01J2009/020320130101 ,  G01J2009/021920130101 ,  G01J2009/023420130101 ,  G01J2009/026120130101 ,  G01J2009/026520130101 ,  G01J2009/028420130101 ,  G01J2009/028820130101

摘要： A method for generating data related at least to the polarization state and the polarization rate, and advantageously to the wavefront shapes, of an incident light beam (51) of any polarization state and any polarization rate, from a single intensity image acquisition Isensor of said light beam (51), using a polarization and wavefront shape imaging system (1) which comprises a polarization modulating mask (2) being a diffractive optical element, and an intensity sensor camera (3), the method comprising :
(A) having previously recorded one set of at least four reference intensity patterns (N1),
(B) recording the single intensity image Isensor of said incident light beam (51),
(C) processing the single intensity image Isensor based on the reference intensity patterns to generate the data related to the polarization state and the polarization rate, and advantageously to the wavefront shapes of the incident light beam (51).