Supercontinuum generation from 2 to 20  μm in GaAs pumped by picosecond CO₂ laser pulses

Abstract

We report on the generation of supercontinuum radiation from 2 to 20 μm in a 67 mm long GaAs crystal pumped by a train of 3 ps ${\mathrm{CO}}_2$ laser pulses. Temporal measurements indicate that sub-picosecond pulse splitting is involved in the production of such wide-bandwidth radiation in GaAs. The results show that the observed spectral broadening is heavily influenced by four-wave mixing and stimulated Raman scattering.

© 2014 Optical Society of America

High-power, mid-infrared, picosecond pulses generated by compression of a CO₂ laser beat-wave in GaAs

J. J. Pigeon, S. Ya. Tochitsky, and C. Joshi
Opt. Lett. 40(24) 5730-5733 (2015)

Anomalous pulse breakup in small-core photonic crystal fibers

A. Podlipensky, P. Szarniak, N. Y. Joly, and P. St. J. Russell
J. Opt. Soc. Am. B 25(12) 2049-2056 (2008)

White-light supercontinuum generation with 60-ps pump pulses in a photonic crystal fiber

Stéphane Coen, Alvin Hing Lun Chau, Rainer Leonhardt, John D. Harvey, Jonathan C. Knight, William J. Wadsworth, and Philip St. J. Russell
Opt. Lett. 26(17) 1356-1358 (2001)

Direct measurement of nonlinear frequency chirp of Raman radiation in single-mode optical fibers using a spectral window method

A. S. L. Gomes, V. L. da Silva, and J. R. Taylor
J. Opt. Soc. Am. B 5(2) 373-380 (1988)

Generation of infrared supercontinuum covering 3–14 μm in dielectrics and semiconductors

P. B. Corkum, P. P. Ho, R. R. Alfano, and J. T. Manassah
Opt. Lett. 10(12) 624-626 (1985)