Influence of different gases on ionisation-induced refractive index changes in gas-filled hollow-core PCF

Koehler JR, Köttig F, Tani F, Russell PSJ (2019)

Publication Type: Conference contribution

Publication year: 2019

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019

Event location: Munich DE

ISBN: 9781728104690

DOI: 10.1109/CLEOE-EQEC.2019.8871839

Abstract

Recombination in gas ionised by femtosecond laser pulses generates heating and sound waves. The resulting transient refractive index changes can, at high enough laser repetition rates, affect propagation of successive pulses. In gas-filled hollow-core photonic crystal fibre (HC-PCF), where pulses with μ energies are sufficiently intense to ionise the gas, pulse-compression and UV-generation experiments revealed a clear dependence of the nonlinear dynamics on repetition rate [1]. In a recent study a probe laser was transmitted through a single-ring HC-PCF from the side to detect the single-shot temporal refractive index evolution [2]. The results suggest using atomically lighter gases to reduce detrimental ionisation effects, however capillary vibrations driven by plasma-induced sound waves caused additional probe-phase modulation which complicated a clear experimental proof.

Authors with CRIS profile

Philip St. John Russell Lehrstuhl für Experimentalphysik (Alfried Krupp von Bohlen und Halbach-Professur)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Koehler, J.R., Köttig, F., Tani, F., & Russell, P.S.J. (2019). Influence of different gases on ionisation-induced refractive index changes in gas-filled hollow-core PCF. In 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. Munich, DE: Institute of Electrical and Electronics Engineers Inc..

MLA:

Koehler, Johannes R., et al. "Influence of different gases on ionisation-induced refractive index changes in gas-filled hollow-core PCF." Proceedings of the 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, Munich Institute of Electrical and Electronics Engineers Inc., 2019.

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