Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Michel Piche"'
Publikováno v:
2022 Photonics North (PN).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21738d91b05e8e20d4b36a3667600256
https://doi.org/10.1109/pn56061.2022.9908333
https://doi.org/10.1109/pn56061.2022.9908333
Publikováno v:
2016 Photonics North (PN).
Laser scanning microscopy is limited in lateral resolution by the diffraction of light. We show that the use of Bessel-Gauss beams leads to a resolution enhancement of 20% in confocal microscopy. Advantages of this technique include simplicity of ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be863b99c0b933364911647e71e343fa
https://doi.org/10.1109/pn.2016.7537878
https://doi.org/10.1109/pn.2016.7537878
Publikováno v:
Frontiers in Remote Sensing, Vol 4 (2023)
A better understanding of how spatial distribution patterns in important primary producers and ecosystem service providers such as macroalgae and coral are affected by climate-change and human activity-related events can guide us in anticipating futu
Externí odkaz:
https://doaj.org/article/1092d0b75dd64a0d88b6c0e097b774b5
Autor:
Michel Piche
Publikováno v:
SPIE Proceedings.
The propagation of symmetrical laser pulses in a Kerr medium produces a broadening of the pulse spectrum while that of nonsymmetrical pulses leads also to a spectral shift. Such a spectral reshaping can be used to mode lock a laser by inserting two s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bf12dee98b25f579c9c5268b1a67ad3
https://doi.org/10.1117/12.165631
https://doi.org/10.1117/12.165631
Autor:
Michel Piche, Xiaonong Zhu
Publikováno v:
SPIE Proceedings.
We discuss the physical mechanisms involved in kinematic mode locking. The issues of what determines a velocity range for the motion of a cavity mirror in order to get the laser mode locked and why a slight cavity-length mismatch is always required f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76bd58e983fd6dba610aa20cf3f0488d
https://doi.org/10.1117/12.165628
https://doi.org/10.1117/12.165628
Publikováno v:
Optical Society of America Annual Meeting.
The existence of photonic band gaps in periodic dielectric structures has been the subject of many recent investigations.1,2 The band structure in any periodic media can be computed from an exact solution of Maxwell’s equations. In this paper, we i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e99807cec947021beb8b107b42769165
https://doi.org/10.1364/oam.1991.mq4
https://doi.org/10.1364/oam.1991.mq4
Publikováno v:
Optical Society of America Annual Meeting.
The recent observation1,2 of self-mode-locking in Ti:Al2O3 lasers has shown that solid-state lasers can generate femtosecond pulse trains with an average power exceeding the watt level. At such a power level, it can be estimated that the nonlinear ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2f79f5d4093f251fda0beef4186f0b9
https://doi.org/10.1364/oam.1991.tui3
https://doi.org/10.1364/oam.1991.tui3
Publikováno v:
Remote Sensing, Vol 14, Iss 13, p 3105 (2022)
The advancement of innovative underwater remote sensing detection and imaging methods, such as continuous wave laser line scan or pulsed laser (i.e., LiDAR—Light Detection and Ranging) imaging approaches can provide novel solutions for studying bio
Externí odkaz:
https://doaj.org/article/db1e32e842034f1694e60590c450491e
Autor:
Michel Piché, Jean-Claude Kieffer, François Légaré, Thomas Brabec, Nicolas Thiré, Pierre-Louis Fortin, Bruno Schmidt, Alexandre April, Sylvain Fourmaux, Vincent Marceau, Stéphane Payeur, Charles Varin
Publikováno v:
Applied Sciences, Vol 3, Iss 1, Pp 70-93 (2013)
In the past years, there has been a growing interest in innovative applications of radially polarized laser beams. Among them, the particular field of laser-driven electron acceleration has received much attention. Recent developments in high-power i
Externí odkaz:
https://doaj.org/article/95c70e7ea3ae4ae2b870bfea1ef4a838
Autor:
Michel Piche
Publikováno v:
International Meeting on Instabilities and Dynamics of Lasers and Nonlinear Optical Systems.
Phase-locking of a multimode laser results in the emission of a train of short pulses of constant shape1. This can be achieved by modulating the cavity losses at a frequency matched to the transit time in the resonator. The short pulse circulating in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ce07a66e2068ee1258bce935b7cc2b0
https://doi.org/10.1364/idlnos.1985.wd5
https://doi.org/10.1364/idlnos.1985.wd5