A simple method for determination of nonlinear propagation regimes in gases - Archive ouverte HAL Access content directly
Journal Articles Optics Express Year : 2007

A simple method for determination of nonlinear propagation regimes in gases

(1) , (1) , (1) , (2) , (1)
1
2

Abstract

A simple method to evaluate the nonlinear propagation regimes in gases is demonstrated. The principle is to focus ultrashort laser pulses into a gas cell, vary the input pulse power and measure the transmission through a pinhole placed at the output. The resulting transmission curve yields an intuitive signature of various nonlinear propagation regimes. Going from low powers to higher, one first observes a brief decrease in the transmission due to nonlinear moving focus. Then, a sharp rise occurs, indicating the starting of the filamentation process. When the power increases further, the transmission saturates and eventually decreases due to the beginning of multi-filamentation. As a result, this method gives a quick and sensitive measurement of pulse energies required to have single and multiple filaments.

Keywords

Dates and versions

hal-00454995 , version 1 (09-02-2010)

Identifiers

Cite

Selcuk Akturk, Ciro d'Amico, Michel A. Franco, Arnaud Couairon, André Mysyrowicz. A simple method for determination of nonlinear propagation regimes in gases. Optics Express, 2007, 15 (23), pp.15260. ⟨10.1364/OE.15.015260⟩. ⟨hal-00454995⟩
71 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More