Abstract
The demand for optical technologies to deliver shorter pulses and higher peak powers is ever growing. Spectral broadening in a multipass cell (MPC) in combination with a highly dispersive mirror compressor is a recent technology that can provide such pulses. Typical MPCs have a concave-concave geometry (cav-cav), which faces three design limitations: excessive self-focusing, laser-induced mirror damage and gas ionisation [1]. A different MPC-geometry comprising a concave and convex cell mirror (cav-vex) only has a virtual focus outside the MPC, thus, it mitigates the gas ionisation. Results with the cav-vex MPC geometry using ambient air and solid medium as the nonlinear medium were published [2, 3]. We extend on this concept and show in this work that spectral broadening can be achieved within a solid-state material as well as within a pressurised gas environment. This allows for finer control of the process since the medium’s position within the cell or the gas pressure can be tuned and paves the way towards further energy scaling of the concept.
© 2023 IEEE
PDF ArticleMore Like This
Alan Omar, Tim Vogel, Martin Hoffmann, and Clara J. Saraceno
Th2.5 Ultrafast Optics (UFO) 2023
Aref Imani, Paolo A. Carpeggiani, Edgar Kaksis, Dimitar Popmintchev, Tenio Popmintchev, Audrius Pugzlys, and Andrius Baltuska
cd_2_2 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2023
Y. Pfaff, G. Barbiero, M. Rampp, H. Wang, S. Klingebiel, C. Y. Teisset, R. Jung, A. H. Woldegeorgis, J. Brons, A. R. Maier, C. J. Saraceno, and T. Metzger
SF1N.4 CLEO: Science and Innovations (CLEO:S&I) 2023