A5045954906- Laser-Matter Interactions and Applications
- Terahertz technology and applications
- Nonlinear Optical Materials Studies
- Spectroscopy and Laser Applications
- Laser-Ablation Synthesis of Nanoparticles
- Energetic Materials and Combustion
- Advanced Fiber Laser Technologies
- Laser-induced spectroscopy and plasma
- Mass Spectrometry Techniques and Applications
- Perovskite Materials and Applications
- Spectroscopy and Quantum Chemical Studies
- Thermal and Kinetic Analysis
- Superconducting and THz Device Technology
- Spectroscopy Techniques in Biomedical and Chemical Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Chemical Thermodynamics and Molecular Structure
- Photonic and Optical Devices
- Advanced Chemical Sensor Technologies
- Diamond and Carbon-based Materials Research
- Laser Material Processing Techniques
- Solid State Laser Technologies
- Semiconductor Quantum Structures and Devices
- Ion-surface interactions and analysis
- Nonlinear Optical Materials Research
- Luminescence Properties of Advanced Materials
Chinese Academy of Sciences
2018-2024
State Key Laboratory of Luminescence and Application
2023-2024
Changchun Institute of Optics, Fine Mechanics and Physics
2018-2023
University of Chinese Academy of Sciences
2021
University of Hyderabad
1985-2020
Rutgers, The State University of New Jersey
2009
In this work, we report a comparative study of the nonlinear optical responses CH3NH3PbX3 (where X is chlorine, bromine, or iodine halogen atom) perovskite thin (~200 nm) films using 40 fs, 800 nm pulses. We found that these possess strong absorption coefficients comparable with highest reported values for film structures (up to 7 × 10−7 cm W−1). also analyze photoluminescence emission from CH3NH3PbBr3 and demonstrate quadratic dependence intensity on probe pulse indicating two-photon...
Gold films are widely used for different applications. We present the results of third- and high-order nonlinear optical studies thin fabricated from Au nanoparticle solutions by spin-coating methods. These nanoparticles were synthesized laser ablation bulk gold in pure water using 200 ps, 800 nm pulses. The highest values absorption coefficient (9 × 10-6 cm W-1), refractive index (3 10-11 cm² saturation intensity (1.3 1010 W cm-2) achieved 35 fs, 400 also determined relaxation time...
The development of versatile two-dimensional (2D) nanocrystals (NCs), with superior nonlinear optical (NLO) properties, is essential for various applications in photonics and communications. In this work, we demonstrate efficient high-order harmonic generation (HHG) from the laser-induced plasmas (LIPs) CsPbBr3 Ni-doped NCs. present study has been directed at unraveling role dopants emission intense harmonics LIP purposefully engineered colloidal trend observed yield enhancement found to be...
There are different possibilities for the applications of gold nanoparticles in various areas optoelectronics. Here we report nonlinear optical studies chemically prepared nanoparticle suspensions using femtosecond pulses. The refractive indices, absorption coefficients, and saturated intensities sizes measured at wavelengths 400 800 nm. We also demonstrate limiting nm, 60 fs pulses during propagation through these suspensions. competition saturable reverse case nm radiation is analyzed....
Silver (Ag) is one of the important targets in studies high harmonic generation (HHG) laser-induced plasma due to relatively conversion efficiencies and cut-off energy. In this work, we study dependence HHG plumes Ag as a function various laser parameters, including intensity ablation pulse, ellipticity driving delay between two pulses. We identify type ion that dominates measured spectra by comparing experimental data with strong-field approximation simulations classical calculations for...
Organometallic lead bromide and iodide perovskite single crystals (PSCs) are potential candidates for terahertz applications. Herein, we performed time-domain spectroscopy (THz-TDS) in the frequency range of 0.1–3.0 THz on different thicknesses MAPbBr3 (0.3, 0.6, 0.8 mm) MAPbI3 (0.6, 0.8, 0.9, 1.3, 2.3 mm). The measurements were carried out with respect to position (along focal area), azimuthal rotation PSCs, incidence angles reference pulse PSCs’ surface. Based transmitted pulses from PSCs...
Resonance enhancement of a single order harmonic has been main attractive feature in high-harmonic generation from laser ablated plumes metals. Although it extensively investigated experimentally and theoretically, studies so far have focused only on linearly polarized driving fields. In this Letter, we study the dependence resonant yield tin ions ellipticity. We find that resonance leads to less rapid decay as function ellipticity, is qualitatively reproduced by quantum mechanical...
Abstract High-order harmonics generation in the laser-induced plasmas produced on surfaces of lead-free perovskites is studied. We analyze (CH 3 NH ) 2 CuCl 4 and CuBr during their ablation by femtosecond, picosecond, nanosecond pulses. The modifications high-order spectra are studied using -color pump scheme (800 nm 400 nm, 40 fs pulses). influence variations laser chirp pulse duration dynamics examined. spectral shift, chirp-related harmonic cutoff scaling, role converting heating...
In this work, we systematically explore the third-order nonlinear optical properties of all-inorganic CsPbX3 (X = Cl, Br, I) perovskite precursor solutions and thin films using femtosecond nanosecond laser pulses. We show that these samples possess strong two-photon absorption (TPA) reverse saturable (RSA), which depend on excitation wavelength. The obtained refraction coefficients for are followed by relation CsPbCl3 > CsPbBr3 CsPbI3 800 1,064 nm wavelengths, whereas became in case 355 400...
Carbon-containing plasma is an attractive medium for generation of harmonics laser pulses in the extreme ultraviolet range. We ablate two metal carbide (B4C and Cr3C2) nanoparticles silicon (SiC) generate after propagation 35 fs through laser-induced plasmas. analyze spectra, spectral shifts, splitting from nanoparticles-contained plasmas, which demonstrate chirp-related harmonic cut-off scaling. In addition, we present simplified two-color pump model calculations HHG based on strong field...