Frequency-resolved spatial beam mapping in multimode fibers: application to mid-infrared supercontinuum generation
Optics Letters, ISSN: 1539-4794, Vol: 46, Issue: 15, Page: 3717-3720
2021
- 7Citations
- 10Captures
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Article Description
We present a new, to the best of our knowledge, spatial-spectral mapping technique permitting measurement of the beam intensity at the output of a graded-index multimode fiber (GIMF) with sub-nanometric spectral resolution. We apply this method to visualize the fine structure of the beam shape of a sideband generated at 1870 nm by geometric parametric instability (GPI) in a GIMF. After spatial-spectral characterization, we amplify the GPI sideband with a thulium-doped fiber amplifier to obtain a microjoule-scale picosecond pump whose spectrum is finally broadened in a segment of InF optical fiber to achieve a supercontinuum ranging from 1.7 up to 3.4 µm.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85111333056&origin=inward; http://dx.doi.org/10.1364/ol.428623; http://www.ncbi.nlm.nih.gov/pubmed/34329264; https://opg.optica.org/abstract.cfm?URI=ol-46-15-3717; https://dx.doi.org/10.1364/ol.428623; https://opg.optica.org/ol/abstract.cfm?uri=ol-46-15-3717
Optica Publishing Group
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