UV laser ablation of polymers is a versatile method to structure polymers with high resolution. The mechanism of ablation is often discussed controversially, but it is necessary to keep in mind that polymers are complex systems with a wide variety of properties that can influence the ablation mechanism. Analyzing the data, it appears that the ablation mechanism is a complex interrelated system,...

purpose: to evaluate the histopathologic features of optic neurotomy with microvitreoretinal (mvr) blade and excimer laser in cadaver eyes. method: optic neurotomy was performed in 11 cadaver eyes using 20-gauge mvr blade and in three cadaver eyes with pulsed xenon chloride (xecl) excimer laser (308 nm) via monofile light-conducting fiber with a core diameter of 200 microns. after tissue proces...

A combination of state-of-the-art temporal and spatial shaping techniques enables pulsed laser light in all dimensions a correlated manner, paving the way for new classes on-demand space–time wavepackets.

(i) UV laser and light sources: they have been used primarily for the treatment of inflammatory skin diseases and/or vitiligo, as well as striae. The mechanism of action is immunomodulatory. The XeCl excimer laser emits at 308 nm, near the peak action spectrum for psoriasis. Other UV nonlaser sources like the 355 nm have also been used for vitiligo and hypopigmentation disorders and various inf...

Modern applications in biological research require high-resolution methods allowing the manipulation of biological samples with a precision beyond the resolution limit of light microscopy. For this purpose the atomicforce microscope (AFM) is an appropriate tool. Promising laser-surgery methods for biomedical applications have been developed employing infrared or near-infrared lasers. However, s...

Seventeen two-photon transitions for neon have been observed in the 580- 635 nm spectral region for use in the spectroscopic study of its higher excited levels, which are not accessible by one-photon absorption. To compare the two and one-photon absorption signals originating from the same lower level, an effort was made to record single-photon optogalvanic spectrum in the available wavele...

Thin films of biodegradable polymeric materials, poly(epsilon-caprolactone) (PCL) and poly(glycolic acid) (PGA) were micro-patterned using a Ti-sapphire femtosecond pulsed laser and ArF excimer UV laser in ambient conditions. The laser-patterned polymers were characterized using a scanning electron microscope (SEM), Fourier transform infrared spectroscopy in attenuated total reflectance mode (F...

The effect of the crystallization and activated annealing of Si films using an excimer laser and the new CW blue laser are described and compared with furnace annealing for application in advanced TFTs and for future applications. Pulsed excimer laser annealing (ELA) is currently being used extensively as a low-temperature poly-silicon (LTPS) process on glass substrates as its efficiency is hig...

ord Hompland atharina de Lange Davies ikael Lindgren orwegian University of Science and Technology epartment of Physics øgskoleringen 5 491 Trondheim, Norway Abstract. Characteristic changes in the organization of fibrillar collagen can potentially serve as an early diagnostic marker in various pathological processes. Tissue types containing collagen I can be probed by pulsed high-intensity las...

introduction: adequate control of acne is difficult, regardless of the various conventional modalities. intense pulsed light (ipl) system is one of the emerging options that are become increasingly useful. methods: to achieve the best ipl parameters we evaluated the efficacy and tolerability of ipl at 752-nm wavelength, 35 j/cm2 fluence, 55-ms pulse duration in comparison with 572-nm wavelength...