Share Email Print
cover

Proceedings Paper

All-fiber supercontinuum source with flat, high power spectral density in the range between 1.1 µm to 1.4 µm based on an Yb3+ doped nonlinear photonic crystal fiber
Author(s): Tobias Baselt; Christopher Taudt; Bryan Nelsen; Andrés Fabián Lasagni; Peter Hartmann
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Supercontinuum light sources provide a high power spectral density with a high spatial coherence. Coherent octavespanning supercontinuum can be generated in photonic crystal fibers (PCFs) by launching short pulses into the fiber. In the field of optical metrology, these light sources are very interesting. For most applications, only a small part of the entire spectrum can be utilized. In biological tissue scattering, absorption and fluorescence limits the usable spectral range. Therefore, an increase of the spectral power density in limited spectral regions would provide a clear advantage over spectral filtering. This study describes a method to increase the spectral power density of supercontinuum sources by amplifying the excitation wavelength inside a nonlinear photonic crystal fiber (PCF). An all-fiber-based setup enables higher output power and power stability. An ytterbium-doped photonic crystal fiber was manufactured by a nanopowder process (drawn by the fiberware GmbH, Germany) and used in a fiber amplifier setup as the nonlinear fiber medium. In order to characterize the fiber’s optimum operational characteristics, group-velocity dispersion (GVD) measurements were performed. The performance of the fiber-based setup was compared with a free space setup. Finally, the system as a whole was characterized in reference to common solid state-laser-based supercontinuum light sources. An improvement of the power density was observed in the spectral range between 1100 nm to 1400 nm.

Paper Details

Date Published: 20 February 2017
PDF: 8 pages
Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 100880E (20 February 2017); doi: 10.1117/12.2252259
Show Author Affiliations
Tobias Baselt, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
Univ. of Applied Sciences Zwickau (Germany)
TU Dresden (Germany)
Christopher Taudt, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
TU Dresden (Germany)
Bryan Nelsen, Univ. of Applied Sciences Zwickau (Germany)
Andrés Fabián Lasagni, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
TU Dresden (Germany)
Peter Hartmann, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
Univ. of Applied Sciences Zwickau (Germany)


Published in SPIE Proceedings Vol. 10088:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVI
Konstantin L. Vodopyanov; Kenneth L. Schepler, Editor(s)

© SPIE. Terms of Use
Back to Top