C. Heyl,
M. Seidel,
E. Escoto,
A. Schoenberg,
S. Carlstroem,
G. Arisholm,
T. Lang,
and I. Hartl

J. Phys. Photonics,

**High-energy bow tie multi-pass cells for nonlinear spectral broadening applications**J. Phys. Photonics,

**4**:014002 (January 2022)## Abstract:

Multi-pass cells (MPCs) have emerged as very attractive tools for spectral broadening and post-compression applications. We discuss pulse energy limitations of standard MPCs considering basic geometrical scaling principles and introduce a novel energy scaling method using a MPC arranged in a bow tie geometry. Employing nonlinear pulse propagation simulations, we numerically demonstrate the compression of 125 mJ, 1 ps pulses to 50 fs using a compact 2 m long setup and outline routes to extend our approach into the Joule-regime.