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Watt-level thulium:holmium-codoped versus holmium-doped polarization-maintaining fiber amplifier at 2050 and 2090 nm

 
: Romano, Clément; Lorenz, Dominik; Eichhorn, Marc; Kieleck, Christelle

:

Dubinskii, M. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Laser Technology for Defense and Security XVI : 12-16 April 2021, Online Only, United States
Bellingham, WA: SPIE, 2021 (Proceedings of SPIE 11724)
ISBN: 978-1-5106-4285-0
ISBN: 978-1-5106-4286-7
Paper 117240I, 6 pp.
Conference "Laser Technology for Defense and Security" <16, 2021, Online>
English
Conference Paper
Fraunhofer IOSB ()
amplifier; polarization-maintaining; thulium-holmium

Abstract
We present the performance of a thulium:holmium-codoped fiber amplifier operating at 2050 and 2090 nm signal wavelength. This amplifier is built with polarization-maintaining fibers and is clad-pumped at 793 nm. We demonstrate more than a watt of signal power for both signal wavelengths. We compare the performance of this amplifier with a previously developed holmium-doped fiber amplifier operating at the same signal wavelengths. The amplifiers are compared in view of their optical-to-optical efficiency, optical bandwidth, gain, and noise figure.

: http://publica.fraunhofer.de/documents/N-635425.html