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Novel high-speed camera analysis of transverse mode instabilities in rod fiber amplifiers
- Source :
- Christensen , S L , Johansen , M M , Michieletto , M , Triches , M , Hout , L , Maack , M D & Lægsgaard , J 2020 , Novel high-speed camera analysis of transverse mode instabilities in rod fiber amplifiers . in Proceedings of SPIE . vol. 11260 , 1126017 , SPIE - International Society for Optical Engineering , Proceedings of SPIE, the International Society for Optical Engineering , vol. 11260 , SPIE Photonics West LASE 2020 , San Francisco , California , United States , 01/02/2020 .
- Publication Year :
- 2020
-
Abstract
- In this work a novel accurate method of measuring beam fluctuations is presented and applied to analyze transverse mode instabilities (TMI). The new measurement, ST-measurement, uses Fourier analysis on data from a high-speed camera to achieve raw spatial information about beam fluctuations. TMI in a 65 μm mode- field-diameter aeroGain-ROD-PM85 fiber is investigated using both the ST- and standard photo detector measurement. A comparison of the two measurements shows the quantitative and qualitative superiority of the new ST-measurement due to the spatial information. Numerical simulations are carried out to support the interpretation of the data.
Details
- Database :
- OAIster
- Journal :
- Christensen , S L , Johansen , M M , Michieletto , M , Triches , M , Hout , L , Maack , M D & Lægsgaard , J 2020 , Novel high-speed camera analysis of transverse mode instabilities in rod fiber amplifiers . in Proceedings of SPIE . vol. 11260 , 1126017 , SPIE - International Society for Optical Engineering , Proceedings of SPIE, the International Society for Optical Engineering , vol. 11260 , SPIE Photonics West LASE 2020 , San Francisco , California , United States , 01/02/2020 .
- Notes :
- application/pdf, English
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1178793268
- Document Type :
- Electronic Resource