Difference between revisions of "Innovative optical component design"
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[[fr:Optique Diffractive sub-λ]] | [[fr:Optique Diffractive sub-λ]] | ||
| − | '''What is the meaning of | + | '''What is the meaning of sub-lambda diffractive optics?''' |
| − | This | + | This concerns diffractive optical elements (DOE) having 4 or more phase levels and a binary thickness profile. A DOE pixel contains several periods of a diffractive grating with a sub-wavelength period. This approach is also known as an effective medium. |
'''Our work focuses on:''' | '''Our work focuses on:''' | ||
| − | * | + | * modeling of effective medium DOE's |
| − | * | + | * adaptation of laser ablation lithography for sub-wavelength period DOE manufacturing |
| − | * manufacturing of | + | * manufacturing of effective medium DOE's by the photolithography technique |
* coupling rigorous electromagnetic calculation tools such as FDTD and RSM | * coupling rigorous electromagnetic calculation tools such as FDTD and RSM | ||
* modeling sub-wavelength period gratings with FMM and FDTD tools. | * modeling sub-wavelength period gratings with FMM and FDTD tools. | ||
| Line 15: | Line 15: | ||
'''We have recently obtained:''' | '''We have recently obtained:''' | ||
| − | * the calibration of effective medium DOE fulfilling both splitter and beam combiner functions for applications related to solar energy. | + | * the calibration of an effective medium DOE fulfilling both splitter and beam combiner functions for applications related to solar energy. |
'''Funding:''' | '''Funding:''' | ||
| − | * thesis scholarship | + | * thesis scholarship from the Alsace Region |
| − | * Iraqi government thesis grant | + | * Iraqi government thesis grant |
<gallery widths=200px heights=150px> | <gallery widths=200px heights=150px> | ||
Revision as of 16:00, 25 August 2015
What is the meaning of sub-lambda diffractive optics?
This concerns diffractive optical elements (DOE) having 4 or more phase levels and a binary thickness profile. A DOE pixel contains several periods of a diffractive grating with a sub-wavelength period. This approach is also known as an effective medium.
Our work focuses on:
- modeling of effective medium DOE's
- adaptation of laser ablation lithography for sub-wavelength period DOE manufacturing
- manufacturing of effective medium DOE's by the photolithography technique
- coupling rigorous electromagnetic calculation tools such as FDTD and RSM
- modeling sub-wavelength period gratings with FMM and FDTD tools.
We have recently obtained:
- the calibration of an effective medium DOE fulfilling both splitter and beam combiner functions for applications related to solar energy.
Funding:
- thesis scholarship from the Alsace Region
- Iraqi government thesis grant
Surface thickness modulation of 4-typical-level DOE with an effective medium
Black and white image used for the development of the photolithographic mask used to manufacture effective medium cylindrical lens
Simulation of an effective medium Fresnel lens
False colour height image of a 4-level DOE measured by interferometry (CSI, Zygo)
