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Proceedings Paper

Adjustable supercontinuum laser source with low coherence length and low timing jitter
Author(s): Marco Andreana; Anthony Bertrand; Yves Hernandez; Philippe Leproux; Vincent Couderc; Stéphane Hilaire; Guillaume Huss; Domenico Giannone; Alessandro Tonello; Alexis Labruyère; Nelly Rongeat; Philippe Nérin
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Paper Abstract

This paper introduces a supercontinuum (SC) laser source emitting from 400 nm to beyond 1750 nm, with adjustable pulse repetition rate (from 250 kHz to 1 MHz) and duration (from ~200 ps to ~2 ns). This device makes use of an internally-modulated 1.06 μm semiconductor laser diode as pump source. The output radiation is then amplified through a preamplifier (based on single-mode Yb-doped fibres) followed by a booster (based on a double-clad Yb-doped fibre). The double-clad fibre output is then spliced to an air-silica microstructured optical fibre (MOF). The small core diameter of the double-clad fibre allows reducing the splice loss. The strongly nonlinear propagation regime in the MOF leads to the generation of a SC extending from the violet to the nearinfrared wavelengths. On the Stokes side of the 1.06 μm pump line, i.e., in the anomalous dispersion regime, the spectrum is composed of an incoherent distribution of quasi-solitonic components. Therefore, the SC source is characterised by a low coherence length, which can be tuned by simply modifying pulse duration, that is closely related to the number of quasi-solitonic components brought into play. Finally, the internal modulation of the laser diode permits to achieve excellent temporal stability, both in terms of average power and pulse-to-pulse period.

Paper Details

Date Published: 14 May 2010
PDF: 9 pages
Proc. SPIE 7714, Photonic Crystal Fibers IV, 771404 (14 May 2010); doi: 10.1117/12.854237
Show Author Affiliations
Marco Andreana, XLIM, CNRS and Univ. de Limoges (France)
Anthony Bertrand, Multitel A.S.B.L. (Belgium)
Yves Hernandez, Multitel A.S.B.L. (Belgium)
Philippe Leproux, XLIM, CNRS and Univ. de Limoges (France)
Vincent Couderc, XLIM, CNRS and Univ. de Limoges (France)
Stéphane Hilaire, Leukos (France)
Guillaume Huss, Leukos (France)
Domenico Giannone, Multitel A.S.B.L. (Belgium)
Alessandro Tonello, XLIM, CNRS and Univ. de Limoges (France)
Alexis Labruyère, XLIM, CNRS and Univ. de Limoges (France)
Nelly Rongeat, Horiba Medical (France)
Philippe Nérin, Horiba Medical (France)

Published in SPIE Proceedings Vol. 7714:
Photonic Crystal Fibers IV
Kyriacos Kalli; Waclaw Urbanczyk, Editor(s)

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