Ultrashort infrared 2.5-11μm pulses: spatiotemporal profiles and absolute nonlinear response of air constituents

Abstract

We measure the detailed spatiotemporal profiles of femtosecond laser pulses in the infrared wavelength range λ=2.5-11μm, and the absolute nonlinear response of major air constituents (N2, O2, and Ar) over this range. The spatiotemporal measurements reveal wavelength-dependent pulse front tilt and temporal stretching in the infrared pulses.

References in corpus (3)

• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
• Measurement of the nonlinear refractive index of air constituents at mid-infrared wavelengths
• Two-photon vibrational excitation of air by long-wave infrared laser pulses

Cited by in corpus (4)

• Free-space propagation of spatio-temporal optical vortices (STOVs)
• Self-guiding of long-wave infrared laser pulses mediated by avalanche ionization
• Second harmonic generation of spatiotemporal optical vortices and conservation of orbital angular momentum
• Resonant noninear refraction of 4-5 $\mu$m light in CO and CO${}_2$ gas