Eur. Phys. J. D (2016) 70: 21
https://doi.org/10.1140/epjd/e2015-60414-y

Regular Article

High-order harmonic generation in Ag, Sn, fullerene, and graphene nanoparticle-contained plasmas using two-color mid-infrared pulses

Ophthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495, Japan

^a e-mail: rashidganeev@mail.ru

Received: 16 July 2015
Received in final form: 19 September 2015
Published online: 26 January 2016

Abstract

We demonstrate the application of tunable mid-infrared pulses (70 fs, 1300–1600 nm) and their second harmonics for high-order harmonic generation in the laser-produced plasmas containing Ag, Sn, C₆₀, and graphene nanoparticles. The application of two-color pump allowed generation of harmonics up to the thirties orders, as well as demonstrated the resonance enhancement of tunable single harmonic in the Sn nanoparticle-contained plasma. The demonstration of equal odd and even harmonic generation in nanoparticle-contained plasmas using tunable mid-infrared source is useful for producing the efficient source of short-wavelength ultrashort pulses for various applications and studies of the properties of harmonic emitters.