Investigation of spatiotemporal output beam profile instabilities from differentially pumped capillaries

Posted on 19.02.2021 - 17:41
Differentially pumped capillaries, i.e., capillaries operated in a pressure gradient environment, are widely used for nonlinear pulse compression. In this work, we show that strong pressure gradients and high gas throughputs can cause spatiotemporal instabilities of the output beam profile. The instabilities occur with a sudden onset as the flow evolves from laminar to turbulent. Based on the experimental and numerical results, we derive guidelines to avoid those instabilities and discuss applications in the context of nonlinear flow dynamics.

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Gebhardt, Martin; Amuah, Emmanuel; Klas, Robert; Stark, Henning; Buldt, Joachim; Limpert, Jens; et al. (2021): Investigation of spatiotemporal output beam profile instabilities from differentially pumped capillaries. The Optical Society. Collection. https://doi.org/10.6084/m9.figshare.c.5224886.v1
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AUTHORS (7)

Martin Gebhardt
Emmanuel Amuah
Robert Klas
Henning Stark
Joachim Buldt
Jens Limpert
Albrecht Steinkopff
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