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14 GHz supercontinuum generation: Calibration sources for astronomical spectrographs

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9 Author(s)
Stark, S. ; Max-Planck-Inst. fur die Phys. des Lichts, Erlangen, Germany ; Hundertmark, H. ; Russell, P.S.J. ; Probst, R.
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We report the use of a specially designed tapered photonic crystal fiber to produce a broadband optical spectrum covering the visible spectral range. The pump source is a frequency doubled Yb fiber laser operating at a repetition rate of 14 GHz and emitting sub-5 pJ pulses. We experimentally determine the optimum core diameter and achieve a 235 nm broad spectrum. Numerical simulations are used to identify the underlying mechanisms and explain spectral features. The high repetition rate makes this system a promising candidate for precision calibration of astronomical spectrographs.

Published in:

Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference

Date of Conference:

22-26 May 2011

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