Abstract
We propose a detailed analysis of a temporal multiplexing technique suited to the post-compression of energetic femtosecond laser pulses in gas-filled hollow-core fibers down to the few-cycle regime. Twofold temporal division and combination are achieved using two birefringent plates with specific crystallographic orientation. We demonstrate a simple interferometric method for measuring the relative spectral phase between two replicas, which gives a measure of the phase mismatch in the combining plate, as well as that induced by eventual cross-phase modulation or ionization during propagation in the fiber. We present the experimental conditions required for producing few-cycle pulses with high fidelity. This passive combination technique will aid the energy scaling of hollow fiber compressors to the multi-millijoule level.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Hermance Jacqmin, Aurélie Jullien, Brigitte Mercier, Marc Hanna, Frédéric Druon, Dimitrios Papadopoulos, and Rodrigo Lopez-Martens
Opt. Lett. 40(5) 709-712 (2015)
Ding Wang, Yuxin Leng, and Zhiyuan Huang
J. Opt. Soc. Am. B 31(6) 1248-1254 (2014)
Tamas Nagy, Michael Forster, and Peter Simon
Appl. Opt. 47(18) 3264-3268 (2008)