| Numéro |
2019
19th International Congress of Metrology
|
|
|---|---|---|
| Numéro d'article | 25001 | |
| Nombre de pages | 8 | |
| Section | Photonics / Photonique | |
| DOI | https://doi.org/10.1051/metrology/201925001 | |
| Publié en ligne | 23 septembre 2019 | |
New optical power sensors using pyrolytic graphite
1
Laboratoire commun de métrologie (LCM LNE-Cnam), 61 rue du Landy, 93210, La Plaine Saint-Denis
2
Former member of the LCM LNE-Cnam, retired since the 8th of June 2019.
* Corresponding author: zaccaria.silvestri@cnam.fr
A new method for measurements of laser power, using pyrolytic carbon (PyC) levitation as torsional magnetic spring, to detect the moment of force provided by radiation pressure of laser beam is currently developed at the LCM LNE-Cnam. This new power-meter could measure laser power in the range from 300 mW to 100 W with an objective to reach a relative uncertainty of about 1%. Relative to a first experimental setup, the new configuration presented in this paper has been improved taking the main disturbing sources into account. The traceability to SI units of the measurement provided by this new power-meter is presented and discussed.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.