Traceable absorption measurements of wavelengths at the NMI of Radiometry and Time & Frequency

Reference number 2018-04575
Coordinator RISE Research Institutes of Sweden AB - Mätteknik Borås
Funding from Vinnova SEK 920 000
Project duration January 2019 - December 2020
Status Ongoing

Purpose and goal

The project aims to create capability for traceability of absorption lines in a gas cell to the realization of frequency as it is assumed to be defined in the restructuring of the SI system in 2019. A main goal is to construct a useful, cost-effective, robust and stable precision-method of traceable absorbance measurements of wavelengths to meet future needs in sensor systems, tunable lasers, optical spectrum analyzers, tunable filter applications, wavelength and frequency locks, and chemical detection systems.

Expected results and effects

The following effects and results are expected to be achieved during the project. - Build an experimental setup that allows traceable measurements of absorption wavelengths of any gas, with traceability to the 1s, or to Cs, which is believed to be one of the new SI units 2019. - Collaboration with Chalmers PhD students and companys within the field - Present the results at conferences and publish the work in scientific journals. - Supervise at least one master´s degree project.

Planned approach and implementation

2019 Q1-Q3 Complete and verify the robust optical comb built in consultation with NIST 2019 Q1-Q4 Develop the lock of an external laser used to illuminate the cell. 2020 Q1-Q4 Traceability Calculations, Measurement uncertainties calculations , Programming of Controls, Creating Reference Cells, Generate parameters for robustnes.

The project description has been provided by the project members themselves and the text has not been examined by our editors.