Open AccessExtended single-mode photonic crystal fiber lasers
Author(s) -
Jens Limpert,
O. Schmidt,
Jan Rothhardt,
F. Röser,
Sabu Thomas,
Andreas Tünnermann,
S. Ermeneux,
P. Yvernault,
F. Salin
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.002715
Subject(s) - photonic crystal fiber , optics , fiber laser , materials science , mode volume , single mode optical fiber , fiber , laser , dispersion shifted fiber , polarization maintaining optical fiber , mode field diameter , core (optical fiber) , graded index fiber , ytterbium , photonic crystal , optoelectronics , optical fiber , fiber optic sensor , physics , composite material
We report on an ytterbium-doped photonic crystal fiber with a core diameter of 60 microm and mode-field-area of ~2000 microm(2) of the emitted fundamental mode. Together with the short absorption length of 0.5 m this fiber possesses a record low nonlinearity which makes this fiber predestinated for the amplification of short laser pulses to very high peak powers. In a first continuous-wave experiment a power of 320 W has been extracted corresponding to 550 W per meter. To our knowledge this represents the highest power per unit length ever reported for fiber lasers. Furthermore, the robust single-transverse-mode propagation in a passive 100 microm core fiber with a similar design reveals the potential of extended large-mode-area photonic crystal fibers.