High-order harmonics generation in nanosecond-pulses-induced plasma containing Ni-doped CsPbBr3perovskite nanocrystals using chirp-free and chirped femtosecond pulses

Srinivasa Rao Konda; Rashid A Ganeev; Vyacheslav V Kim; Ravi Ketavath; Jiaqi Yu; Wei Li

doi:10.1088/1361-6528/ac9fdb

High-order harmonics generation in nanosecond-pulses-induced plasma containing Ni-doped CsPbBr₃perovskite nanocrystals using chirp-free and chirped femtosecond pulses

Nanotechnology. 2022 Nov 18;34(5). doi: 10.1088/1361-6528/ac9fdb.

Authors

Srinivasa Rao Konda¹, Rashid A Ganeev^{2

3

4}, Vyacheslav V Kim², Ravi Ketavath⁵, Jiaqi Yu¹, Wei Li¹

Affiliations

¹ GPL photonics laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
² Laboratory of Nonlinear Optics, Institute of Astronomy, University of Latvia, Jelgavas iela 3, Riga, LV-1004, Latvia.
³ Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, Kori Niyazov street 39, Tashkent 100000, Uzbekistan.
⁴ Department of Physics, Voronezh State University, Voronezh 394006, Russia.
⁵ Solar Cells and Photonics Research Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India.

PMID: 36327449
DOI: 10.1088/1361-6528/ac9fdb

Abstract

We demonstrate high-order harmonic generation in Ni-doped CsPbBr₃perovskite nanocrystals ablated by nanosecond pulses using chirp-free 35 fs, and chirped 135 fs pulses in the case of single-color pump (800 nm) and a two-color pump (800 and 400 nm). We analyzed the spectral shift, cut-off, and intensity distribution of harmonics in the case of chirped drving pulses compared to chirp-free pulses. It is shown that the presence of Ni dopants and CsPbBr₃plasma components improves the harmonics emission. Also, we measured the third-order nonlinear optical (NLO) properties of these nanocrystals using 800 nm, 60 fs, 1 kHz pulses. The variations of measured NLO parameters of CsPbBr₃perovskite nanocrystals containing different concentrations of nickel correlate with variations of generated high-order harmonics from laser induced plasmas of studied nanocrystals in terms of harmonics intensity, cut-off, and spectral shift (in case of chirped driving pulses). The spectral shift of the harmonics generated from the Ni-doped CsPbBr₃perovskite nanocrystals can be used to form tunable extreme ultraviolet sources.

Keywords: 2D nanocrystals; Ni-doped CsPbBr3; high-order harmonics; laser-induced plasma; nanosecond pulses; perovskites.