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Publikationen von
Yiming Tu

Alle Publikationen des HI Jena

2021

C. Jauregui, C. Stihler, S. Kholaif, Y. Tu, and J. Limpert
Control and stabilization of the modal content of fiber amplifiers using traveling waves
Optics Express 29, 34452 (2021)

Abstract: In this work we present a novel way to manipulate the effect of transverse mode instability by inducing traveling waves in a high-power fiber system. What sets this technique apart is the fact that it allows controlling the direction of the modal energy flow, for the first time to the best of our knowledge. Thus, using the method proposed in this work it will be possible to transfer energy from the higher-order mode into the fundamental mode of the fiber, which mitigates the effect of transverse mode instability, but also to transfer energy from the fundamental mode into the higher-order mode. Our simulations indicate that this approach will work both below and above the threshold of transverse mode instability. In fact, our model reveals that it can be used to force a nearly pure fundamental mode output in the fiber laser system almost independently of the input coupling conditions. In this context, this technique represents the first attempt to exploit the physics behind the effect of transverse mode instability to increase the performance of fiber laser systems.

C. Jauregui, C. Stihler, S. Kholaif, Y. Tu, and J. Limpert
Transverse Mode Instability in High-Power Fiber Laser Systems: a "Hot Topic"
(2021)

Abstract: Roughly a decade ago the future of fiber laser technology looked brighter than ever with enticing power scaling prospects [1] . These predictions seemed to be supported by the unprecedented exponential rate of power increase sustained over the previous two decades [2] . At those times, multi ten-kW fiber laser systems seemed within reach. So what could possibly go wrong?

S. E. Kholaif, Y. Tu, C. Stihler, C. Jauregui, and J. Limpert
Characterization of transverse mode instability in fiber-laser systems using a position-sensitive detector
(2021)
Kein Abstract vorhandenLinkBibTeX
C. Jauregui-Misas, C. Stihler, S. E. Kholaif, Y. Tu, and J. Limpert
Mitigation of transverse mode instability in polarization maintaining, high-power fiber amplifiers
(2021)
Kein Abstract vorhandenLinkBibTeX
C. Stihler, C. Jauregui, S. E. Kholaif, Y. Tu, and J. Limpert
Mitigation of transverse mode instability through a dynamic modification of the inversion in high-power fiber amplifiers
(2021)
Kein Abstract vorhandenLinkBibTeX