This article is cited in 2 papers

OPTICS AND NUCLEAR PHYSICS

Influence of the carrier–envelope phase on the generation of the multioctave supercontinuum and ultrashort pulses in antiresonant hollow waveguides

I. V. Savitskiy^a, A. A. Voronin^ab, E. A. Stepanov^ba, A. A. Lanin^ab, A. B. Fedotov<sup>ba

a</sup> Faculty of Physics, Moscow State University, Moscow, 119991 Russia
^b Russian Quantum Center, Skolkovo, Moscow, 121205 Russia

Abstract: The influence of the carrier–envelope phase on the spectrum of the supercontinuum and on the characteristics of ultrashort pulses, which are formed by the nonlinear optical transformation of pump pulses in an argon-filled antiresonant hollow waveguide has been demonstrated. The experimental and theoretical analysis has shown that the soliton self-compression of pump radiation with a central wavelength of about 2 $\mu$m forms a pulse with a duration of nearly one optical cycle and with a spectrum broadened to the region of 400–800 nm, where interference with the broadband third harmonic generated by the same pulse is observed. The interference pattern is sensitive to the carrier–envelope phase of the laser pulse. The analysis of the interference pattern provides information on the difference of the spectral phases of the soliton and third harmonic in the spectral range wider than an octave and allows one to control the duration of pulses formed in the process of soliton self-compression.

Received: 12.07.2023
Revised: 22.08.2023
Accepted: 22.08.2023

DOI: 10.31857/S1234567823190047

 English version: Journal of Experimental and Theoretical Physics Letters, 2023, 118:7, 483–490