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Experimental investigation on the high-order modes in supercontinuum generation from step-index As-S fibers.
- Source :
-
Applied Physics B: Lasers & Optics . Jun2018, Vol. 124 Issue 6, p1-1. 1p. 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 4 Graphs. - Publication Year :
- 2018
-
Abstract
- Two kinds of step-index As-S fibers have been fabricated by an isolated extrusion method with a numerical aperture (NA) of 0.52, but with different core size of 10 or 50 µm. With a femtosecond laser pumping, their supercontinnum (SC) generation spectra were recorded in order to testify the effect of high-order modes on SC generation. The spectra spanning from 1.0 to 6.7 µm and from 1.5 to 8.6 µm can be obtained in a 16-cm-long fiber with 10 µm-core diameter pumping by central wavelength of 2.9 and 4.0 µm, respectively. The results show that high-order modes would deplete the spectra spanning in red-shifting part. The SC generation in small-core fiber is much more efficient than that in large-core fiber. This is the first comparative investigation on the SC generation from the quasi single- and multi-mode ChG fibers under the same conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09462171
- Volume :
- 124
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Applied Physics B: Lasers & Optics
- Publication Type :
- Academic Journal
- Accession number :
- 130275824
- Full Text :
- https://doi.org/10.1007/s00340-018-6991-0