Supercontinuum in Multimode Fiber

Episode 49

#supercontinnum
#whitelightlaser
#laser
This episode is a follow up video on a home made Supercontinuum Laser!
This version uses Multimode Telecoms fiber, for much better efficiency, however this stuff also exhibits additional properties, including very bright combs, and what looks like self-mode cleaning...

For a very good explanation of Stimulated Raman Scattering (the primary nonlinear process in this video) please check out: Your Favourite TA's video on Stimulated Raman Scattering here: https://www.youtube.com/watch?v=sZEGMDZKyPQ

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Previous episode: https://youtu.be/w1wSHizmbYg

Nitrogen Laser used in this video:
https://youtu.be/0MvXXwAizrM
https://youtu.be/ngs9zPdI_t0

Dye Laser used in this video:
https://youtu.be/-ny_-Y1MpRY

Information on Supercontinuum generation: https://www.rp-photonics.com/supercontinuum_generation.html

Supercontinuum Academic paper:
Lin, Chinlon; Stolen, R. H. (1976-02-15). "New nanosecond continuum for excited‐state spectroscopy". Applied Physics Letters. AIP Publishing. 28 (4): 216–218. doi:10.1063/1.88702. ISSN 0003-6951.
0:00 Intro
0:46 Multimode Fiber
2:25 Measuring pulsed Lasers
3:55 Dye Laser Joule meter measurement
4:37 Dye Laser Pulse Width measurement
5:27 Calculations
7:27 Supercontinuum generation multimode fiber
10:46 View of the Spectrum, bright combs!
14:00 Measuring Supercontinuum power and efficiency
14:40 Spectrometer measurement
15:15 100m of mutimode fiber!
16:15 Brilliant full spectrum combs!
17:23 Close up of fiber
18:01 More gratuitous beam shots!
18:37 Long exposure photos!
19:07 Outro

Видео Supercontinuum in Multimode Fiber канала Les' Lab