Translator Disclaimer
11 March 2014 Photonic crystal fiber pump combiner for high-peak power all-fiber thulium lasers
Author Affiliations +
We report on the performance of a prototype pump combiner for use with thulium-doped photonic crystal fiber (PCF). This platform is attractive for “all-fiber” high energy and high peak power laser sources at 2 μm. We will report on the performance of this integrated amplifier in comparison to free space amplification in Tm:PCF. In particular, we carefully look for spectral/temporal modulation resulting from multimode interference between fundamental and higher order transverse modes in the amplifier to evaluate this for ultrashort chirped pulse amplification. The slope efficiency for the all-fiber amplifier is 22.1 %, indicating the need for further improvement. However, an M2 < 1.07 demonstrates excellent beam quality, as well as amplified polarization extinction ratios of ~25 dB.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alex Sincore, Jason Tafoya, Donald Sipes Jr., Lasse Leick, Lawrence Shah, and Martin Richardson "Photonic crystal fiber pump combiner for high-peak power all-fiber thulium lasers", Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 896133 (11 March 2014);

Back to Top