• Corpus ID: 238531668

Erbium-doped-fiber-based broad visible range frequency comb with a 30 GHz mode spacing for astronomical applications

  title={Erbium-doped-fiber-based broad visible range frequency comb with a 30 GHz mode spacing for astronomical applications},
  author={Keisuke Nakamura and Ken Kashiwagi and Sho Okubo and Hajime Inaba},
Optical frequency combs have the potential to improve the precision of the radial velocity measurement of celestial bodies, leading to breakthroughs in such fields as exoplanet exploration. For these purposes, the comb must have a broad spectral coverage in the visible wavelength region, a wide mode spacing that can be resolved with a high dispersion spectrograph, and sufficient robustness to operate for long periods even in remote locations. We have realized a comb system with a 30 GHz mode… 

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