Yvon Renotte - Academia.edu (original) (raw)
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Papers by Yvon Renotte
Optical Engineering, 1995
A phase-shifting digital speckle pattern interferometer (DSPI) has been calibrated using a Michel... more A phase-shifting digital speckle pattern interferometer (DSPI) has been calibrated using a Michelson interferometer. Calibration consists in measuring phase shifts generated by piezoelectric transducers (PZTs) and also to determine drift of the phase with time in the interferometer arms. The calibration fringes are displayed live on the TV monitor and then processed slice by slice after recombination following their recording
Proceedings of SPIE, Apr 26, 2012
ABSTRACT
Proceedings of SPIE, Oct 2, 2008
This paper describes a new concept related to the micromechanical sensors for detecting the prese... more This paper describes a new concept related to the micromechanical sensors for detecting the presence and concentration of chemical substances and/or biological organisms. We believe that this concept allow for a low cost and ease of fabrication of a large bi-dimensional array of sensors with an enhanced signal-to-noise ratio. A bi-dimensional array of micro-cantilever coated with different types of sensing
Proceedings of SPIE, Feb 25, 2003
Proceedings of SPIE, Jun 10, 2009
ABSTRACT
Design of Holographic Optical Element for optpelectonics applicationsPeer reviewe
The journal of photographic science, 1989
HAL (Le Centre pour la Communication Scientifique Directe), Aug 22, 2002
We describe an alternative design for the 4-quadrant phase mask coronagraph described recently by... more We describe an alternative design for the 4-quadrant phase mask coronagraph described recently by Rouan et al. 2000. Based on the same principle, i.e. producing a very efficient nulling by mutually destructive interferences of the coherent light from the main source, our mask realises the pi phase shift using some properties of ZOGs (Zeroth Order Gratings) and according to an original scheme respecting the 4-quadrant symmetry. When the period of the one-dimension grating structure is smaller than the wavelength of the incident light, the structure becomes birefringent. The effective refractive indices depend on the wavelength. Using this feature, we can design a mask whose nulling e±ciency is maintained within a wide wavelength range. Numerical simulations were made according to the RCWT (Rigorous Coupled Wave Theory)
HAL (Le Centre pour la Communication Scientifique Directe), Nov 16, 2015
Optical Engineering, 1995
A phase-shifting digital speckle pattern interferometer (DSPI) has been calibrated using a Michel... more A phase-shifting digital speckle pattern interferometer (DSPI) has been calibrated using a Michelson interferometer. Calibration consists in measuring phase shifts generated by piezoelectric transducers (PZTs) and also to determine drift of the phase with time in the interferometer arms. The calibration fringes are displayed live on the TV monitor and then processed slice by slice after recombination following their recording
Proceedings of SPIE, Apr 26, 2012
ABSTRACT
Proceedings of SPIE, Oct 2, 2008
This paper describes a new concept related to the micromechanical sensors for detecting the prese... more This paper describes a new concept related to the micromechanical sensors for detecting the presence and concentration of chemical substances and/or biological organisms. We believe that this concept allow for a low cost and ease of fabrication of a large bi-dimensional array of sensors with an enhanced signal-to-noise ratio. A bi-dimensional array of micro-cantilever coated with different types of sensing
Proceedings of SPIE, Feb 25, 2003
Proceedings of SPIE, Jun 10, 2009
ABSTRACT
Design of Holographic Optical Element for optpelectonics applicationsPeer reviewe
The journal of photographic science, 1989
HAL (Le Centre pour la Communication Scientifique Directe), Aug 22, 2002
We describe an alternative design for the 4-quadrant phase mask coronagraph described recently by... more We describe an alternative design for the 4-quadrant phase mask coronagraph described recently by Rouan et al. 2000. Based on the same principle, i.e. producing a very efficient nulling by mutually destructive interferences of the coherent light from the main source, our mask realises the pi phase shift using some properties of ZOGs (Zeroth Order Gratings) and according to an original scheme respecting the 4-quadrant symmetry. When the period of the one-dimension grating structure is smaller than the wavelength of the incident light, the structure becomes birefringent. The effective refractive indices depend on the wavelength. Using this feature, we can design a mask whose nulling e±ciency is maintained within a wide wavelength range. Numerical simulations were made according to the RCWT (Rigorous Coupled Wave Theory)
HAL (Le Centre pour la Communication Scientifique Directe), Nov 16, 2015