Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Guillon, Marc"'
Single-shot hyperspectral wavefront sensing is essential for applications like spatio-spectral coupling metrology in high power laser or fast material dispersion imaging. Under broadband illumination, traditional wavefront sensors assume an achromati
Externí odkaz:
http://arxiv.org/abs/2410.19097
Imaging both the polarization and the wavefront of a light beam is a complex task that typically demands several intensity acquisitions. Furthermore, sequential acquisition solutions are incompatible with the monitoring of ultra-fast processes. As a
Externí odkaz:
http://arxiv.org/abs/2407.19827
Autor:
Arjmand, Payvand, Thodika, Samlan Chandran, Bivas, Elsa, Li, Haoyang, Oheim, Martin, Yoshida, Hiroyuki, Brasselet, Etienne, Guillon, Marc
Stimulated Emission Depletion (STED) microscopy has emerged as a powerful technique providing visualization of biological structures at the molecular level in living samples. In this technique, the diffraction limit is broken by selectively depleting
Externí odkaz:
http://arxiv.org/abs/2407.16493
In astronomy or biological imaging, refractive index inhomogeneities of e.g. atmosphere or tissues induce optical aberrations which degrade the desired information hidden behind the medium. A standard approach consists in measuring these aberrations
Externí odkaz:
http://arxiv.org/abs/2305.19758
Autor:
Wu, Tengfei, Zhang, Yixuan, Blochet, Baptiste, Arjmand, Payvand, Berto, Pascal, Guillon, Marc
Aberrations and multiple scattering in biological tissues critically distort light beams into highly complex speckle patterns. In this regard, digital optical phase conjugation (DOPC) is a promising technique enabling in-depth focusing. However, DOPC
Externí odkaz:
http://arxiv.org/abs/2304.01759
Publikováno v:
APL Photonics 6, 126105 (2021)
Multimode fibers (MMF) are used in many applications from telecomunications to minimally invasive micro-endoscopic imaging. However, the numerous modes and their coupling make light-beam control and imaging a delicate task. To circumvent this difficu
Externí odkaz:
http://arxiv.org/abs/2107.10926
Publikováno v:
Appl. Phys. Lett. 118, 251102 (2021)
Wavefront sensing is a widely-used non-interferometric, single-shot, and quantitative technique providing the spatial-phase of a beam. The phase is obtained by integrating the measured wavefront gradient. Complex and random wavefields intrinsically c
Externí odkaz:
http://arxiv.org/abs/2101.07114
Autor:
Vesga, Arturo G., Hofer, Matthias, Balla, Naveen Kumar, De Aguiar, Hilton B., Guillon, Marc, Brasselet, Sophie
Wavefront shaping is a powerful method to refocus light through a scattering medium. Its application to large spectral bandwidths or multiple wavelengths refocusing for nonlinear bio-imaging in-depth is however limited by spectral decorrelations. In
Externí odkaz:
http://arxiv.org/abs/1908.01243
Publikováno v:
Optica, Optical Society of America (OSA), 2019, 6 (7), pp.914-920
Deterministic control of coherent random light is highly important for information transmission through complex media. However, only a few simple speckle transformations can be achieved through diffusers without prior characterization. As recently sh
Externí odkaz:
http://arxiv.org/abs/1901.11497
Autor:
Pascucci, Marco, Ganesan, Sivaramankrishna, Tripathy, Aditya, Katz, Ori, Emiliani, Valentina, Guillon, Marc
Publikováno v:
Nat. Commun. 10, 1327 (2019)
Nonlinear structured illumination microscopy (nSIM) is an effective approach for super-resolution wide-field fluorescence microscopy with a theoretically unlimited resolution. In nSIM, carefully designed, highly-contrasted illumination patterns are c
Externí odkaz:
http://arxiv.org/abs/1710.05056