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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:    • Stimulated Raman Scattering and Raman...   If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon:   / leslaboratory   Or donate directly: https://paypal.me/leslaboratory Alternatively, please share this content on your social media platforms, it really helps me out! Previous episode:    • DIY SUPERCONTINUUM LASER on a BUDGET!!   Nitrogen Laser used in this video:    • Can it be repaired? Dumpster Nitrogen...      • Dumpster Laser rebuilt and modded!   Dye Laser used in this video:    • DIY Tunable Dye Laser! (HD 60FPS re-e...   Information on Supercontinuum generation: https://www.rp-photonics.com/supercon... 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