Add to BibSonomy
Abstract
In this Letter, we report on the generation of 1060 W average power from an ultrafast thulium-doped fiber chirped pulse amplification system. After compression, the pulse energy of 13.2 μJ with a pulse duration of 265 fs at an 80 MHz pulse repetition rate results in a peak power of 50 MW spectrally centered at 1960 nm. Even though the average heat-load in the fiber core is as high as 98 W/m, we confirm the diffraction-limited beam quality of the compressed output. Furthermore, the evolution of the relative intensity noise with increasing average output power has been measured to verify the absence of transversal mode instabilities. This system represents a new average power record for thulium-doped fiber lasers (1150 W uncompressed) and ultrashort pulse fiber lasers with diffraction-limited beam quality, in general, even considering single-channel ytterbium-doped fiber amplifiers.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Michael Müller, Arno Klenke, Albrecht Steinkopff, Henning Stark, Andreas Tünnermann, and Jens Limpert
Opt. Lett. 43(24) 6037-6040 (2018)
Michael Müller, Marco Kienel, Arno Klenke, Thomas Gottschall, Evgeny Shestaev, Marco Plötner, Jens Limpert, and Andreas Tünnermann
Opt. Lett. 41(15) 3439-3442 (2016)
Mengmeng Wang, Hui Zhang, Rongling Wei, Zexiu Zhu, Shuangchen Ruan, Peiguang Yan, Jinzhang Wang, Tawfique Hasan, and Zhipei Sun
Opt. Lett. 43(19) 4619-4622 (2018)