Journal of Laser Applications · 2012 · 822 citations · 43 references
Natural SciencesMaterials EngineeringMaterials ScienceOpticsPhotonicsSemiconductor MaterialsLaser OpticsLaser PhysicsOptical Properties Of MaterialsOptical Properties Of SemiconductorsOptical Properties Of SolidsUltrafast OpticsExcitationFemtosecond Laser PulsesIrradiation ConditionsOptical PropertiesSurface Optical PropertiesUltrafast Laser ExcitationUltrafast Laser Material ProcessingUltrafast Optical Response
The study investigates the formation of laser‑induced periodic surface structures in metals, semiconductors, and dielectrics using linearly polarized femtosecond laser pulses in air, combining experimental and theoretical approaches. The authors analyze how transient changes in optical properties influence LIPSS periods in semiconductors and examine the role of transient excitation stages in dielectrics, while characterizing LIPSS formation across materials with femtosecond pulses. They observe low‑frequency LIPSS with periods near the laser wavelength in metals, generate sub‑100‑nm high‑frequency LIPSS under specific conditions, and show that in dielectrics the LIPSS period decreases for double‑pulse delays shorter than 2 ps.
The formation of laser-induced periodic surface structures (LIPSS) in different materials (metals, semiconductors, and dielectrics) upon irradiation with linearly polarized fs-laser pulses (τ ∼ 30–150 fs, λ ∼ 800 nm) in air environment is studied experimentally and theoretically. In metals, predominantly low-spatial-frequency-LIPSS with periods close to the laser wavelength λ are observed perpendicular to the polarization. Under specific irradiation conditions, high-spatial-frequency-LIPSS with sub-100-nm spatial periods (∼λ/10) can be generated. For semiconductors, the impact of transient changes of the optical properties to the LIPSS periods is analyzed theoretically and experimentally. In dielectrics, the importance of transient excitation stages in the LIPSS formation is demonstrated experimentally using (multiple) double-fs-laser-pulse irradiation sequences. A characteristic decrease of the LIPSS periods is observed for double-pulse delays of less than 2 ps.
43
Simple technique for measurements of pulsed Gaussian-beam spot sizes
J. M. Liu · Optics Letters · 1982 · 1.8K citations
Laser-induced periodic surface structure. I. Theory
J. E. Sipe, Jeff F. Young, J. S. Prestón et al. · Physical review. B, Condensed matter · 1983 · 1.3K citations
Natural Sciences, Physics, Optics +16
Femtosecond laser ablation of silicon–modification thresholds and morphology
Jörn Bonse, S. Baudach, Jörg Krüger et al. · Applied Physics A · 2002 · 807 citations