Translator Disclaimer
21 April 2020 Advances in two-micron lasers for nonlinear conversion into the mid-IR
Author Affiliations +
Efficient high-power 2 μm fiber laser sources play a growing role in direct pumping of nonlinear crystals for frequency conversion into to mid-IR. There is an ongoing progress in fiber development and cavity improvement achieving outstanding laser performance for an efficient optical parametric generation. In this paper, we report on the investigation and characterization of a polarization-maintaining (PM) Thulium-Holmium-codoped triple-clad fiber (THTF). First fundamental studies were performed in a continuous-wave (CW) regime and showed highly promising results as a high power pump source for frequency conversion into the mid-IR. The paper focuses on first fundamental studies and the comparison of laser setups based on a 4.1 m and a 7 m active fiber length. Using the 7 m fiber, the THTF laser delivered an output power of 181 W. The laser had a degree of polarization of 98 %, a slope efficiency of 34.1 %, an optical-to-optical efficiency of 30% and a linewidth of 250 pm centered at 2050 nm. The laser output performance is compared with previous data of a THTF laser with a 4.1 m long fiber.1
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick Forster, Clément Romano, Christelle Kieleck, and Marc Eichhorn "Advances in two-micron lasers for nonlinear conversion into the mid-IR", Proc. SPIE 11355, Micro-Structured and Specialty Optical Fibres VI, 1135509 (21 April 2020);


Modeling of 2 um Tm Ho ZBLAN diode pumped cw...
Proceedings of SPIE (April 24 1996)
In-fiber resonant pumping of a fiber laser
Proceedings of SPIE (February 19 2009)
Tm:glass laser pumping a Ho:YAG laser
Proceedings of SPIE (March 21 2003)
Spectroscopy of Tm Ho co doped tellurite glass for mid...
Proceedings of SPIE (October 31 2005)
Multimode diode-pumped monomode fiber lasers
Proceedings of SPIE (January 08 1996)
Q switched PM Tm fiber laser oscillator for mid...
Proceedings of SPIE (February 15 2012)

Back to Top