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Related Concept Videos

¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...

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Related Experiment Video

Updated: Jun 22, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Novel suppression scheme for Brillouin scattering.

P Weßels, P Adel, M Auerbach

    Optics Express
    |June 2, 2009
    PubMed
    Summary

    A novel method efficiently suppresses Brillouin scattering in fiber amplifiers by amplifying two seed lasers. This technique enhances power scaling for laser systems.

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Fiber Optics

    Background:

    • Stimulated Brillouin scattering (SBS) is a nonlinear optical effect that limits the power of fiber amplifiers.
    • Efficiently suppressing SBS is crucial for high-power fiber laser systems.

    Purpose of the Study:

    • To demonstrate a new scheme for efficient suppression of Brillouin scattering in a Neodymium-doped fiber amplifier.
    • To enable further power scaling of existing fiber laser systems.

    Main Methods:

    • Simultaneous amplification of two seed lasers with wavelengths separated by twice the Brillouin shift.
    • Utilizing a 72 m-long Neodymium-doped fiber amplifier.

    Main Results:

    • Demonstrated efficient suppression of Brillouin scattering.

    More Related Videos

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
    07:55

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

    Published on: September 22, 2017

    Related Experiment Videos

    Last Updated: Jun 22, 2026

    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
    13:31

    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

    Published on: December 22, 2015

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
    07:55

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

    Published on: September 22, 2017

  • The proposed scheme is compatible with conventional SBS suppression methods.

    • Conclusions:

    • The new scheme offers an effective approach for Brillouin scattering suppression.
    • This method facilitates increased power output from fiber amplifiers.