Dr. Muhammed Inam Mirza

Muhammed Inam Mirza

Senior Researcher

Category

Scientist

Division (no.)

Division of Optics (4)

Department (no.)

Scientific Laser Applications (81)

Cell phone

+420 720 868 309

E-mail

mirzam [at] fzu.cz

Locality

Ústav informatiky

Laser-induced gas-phase transfer and direct stamping of nanomaterials: comparison of nanosecond and femtosecond pulses

Top left: Schematics of BB-LIFT in which two laser irradiation regimes and two donor-to-receiver distances were used. Top right: An optical microscope image of the transferred hBN flakes; the color change is due to a variation in the number of layers across the flake. Bottom: BB-LIFT transfer in the laser scanning regimes with overlapping zones of irradiation for nanosecond and femtosecond laser pulses. (A) and (C) are the receiver substrates and (B) and (D) are the donors.

Coherence effects in LIPSS formation on silicon wafers upon picosecond laser pulse irradiations

Top: Schematic representation of the three-wave interference. Bottom: Optical microscope images of two neighboring spots produced sequentially on silicon by femtosecond laser pulses of different polarization.

Dual-wavelength femtosecond laser-induced single-shot damage and ablation of silicon

Non-thermal regimes of laser annealing of semiconductor nanostructures: crystallization without melting

(a) Schematics of a stress/shock wave initiation upon ultrashort laser annealing of the titania nanotubes. (b) A sketch for phase transformation from the amorphous state to anatase and rutile. (c) SEM image of the TiO2 nanotubes annealed with the picosecond laser pulses.

Formation of tubular structures and microneedles on silicon surface by doughnut-shaped ultrashort laser pulses

Left: Experimental scheme. Right: Schematics of laser ablation with the formation of tubular and needle-like structures.

Periodic surface functional group density on graphene via laser-induced substrate patterning at Si/SiO2 interface

Schematics of LIPSS formation and graphene functionalization on SiO2/Si samples. The ratio of intensities of D and G modes in the Raman spectrum of graphene across the LIPSS is shown in the right top, indicating the periodic formation of sp3 carbons in the graphene lattice.

Ultrashort pulse laser ablation of dielectrics: Thresholds, mechanisms, role of breakdown

Linking optical emission with crater morphology. (a) Early stage optical emission spectra from Willow glass which belongs to a hot electron plasma excited in the sample. (b–d) AFM profiles of the single-shot ablation craters obtained with the average fluences of 59 (b), 24 (c), and 2.76 J/sq.cm (d).

Ultrashort pulse laser ablation of dielectrics

Laserová ablace dielektrik ultrakrátkými pulzy

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