title: Third- and fifth-harmonic generation      by mid-infrared ultrashort pulses:      beyond the fifth-order      nonlinearity.
abstract: Third- and fifth-harmonic generation by ultrashort laser pulses in the      mid-infrared (mid-IR) reveals      nonlinear-optical effects beyond      the fifth-order nonlinearity and enables, because of an extraordinarily long      coherence length, efficient multiplex frequency upconversion of ultrashort      mid-IR pulses. We show that harmonic generation by mid-IR pulses provides an      access to the key optical constants of gas media, allowing metrology of linear      and nonlinear-optical susceptibilities in the mid-IR and offering a tool for the      remote sensing of the atmosphere.
authors: Photonics Institute, Vienna University of Technology, Gusshausstrasse 27-387, A-1040 Vienna, Austria.
authors: D
authors: D
authors: Kartashov
authors: S
authors: S
authors: Ališauskas
authors: A
authors: A
authors: Pugžlys
authors: A A
authors: AA
authors: Voronin
authors: A M
authors: AM
authors: Zheltikov
authors: A
authors: A
authors: Baltuška