Ge-SiO2 thin films highly photosensitive to excimer laser light were deposited by plasma enhanced chemical vapor deposition. In this paper, the following two studies are reported: (1) Direct writing of the channel waveguide was successfully confirmed only by irradiation with excimer laser through a Cr mask pattern, which was previously coated on the slab waveguide by sputtering method. Bragg gr...

A dry sacrificial layer process is presented in which microstructures fabricated on UV-transparent substrates are released by excimer laser ablation of a polymer sacrificial material using laser light incident from the reverse side of the substrate. We investigate the application of this technique to the batch assembly of hybrid microelectromechanical systems (MEMS) built from parts fabricated ...

PURPOSE To determine the human corneal threshold ablation energy density for the 193-nm ArF excimer laser, approximating clinical conditions. METHODS The VISX Star (Santa Clara, CA) 193-nm argon fluoride excimer laser was used to ablate the cornea in human eye bank eyes under clinical conditions. Corneas were exposed to energy densities of 10, 20, 30, 35, 40, 45, and 140 to 160 mJ/cm2. Cornea...

A multiwavelength excitation process using F2 and KrF excimer lasers for the high-efficiency and high-speed refractive index modification of fused silica is demonstrated. This process is essentially superior to conventional single-wavelength F2 laser processing. The former process achieves twice the diffraction efficiency of the latter process at the same number of total photons supplied to the...

Mitomycin C is an antimetabolite agent that blocks DNA and RNA replication and protein synthesis. It has been used in several ophthalmologic areas, and recently as a modulator of corneal wound healing in excimer laser surgeries. A single application of mitomycin C during surface corneal photoablative surgery seems a safe and efficient therapeutic option for eyes with corneal opacity and/or as p...

A tunable ArF* (193-nm) excimer source is described that produces over 125 mJ/pulse (peak) at 10 pulses/sec. This device has a spectral width of less than 2 cm(-1) and a demonstrated tunability of nearly 320 cm(-1) from 192.8 to 193.9 nm. Tunability, bandwidth, and mode control are achieved by injecting the fourth anti-Stokes line (in H(2)) of a frequency-doubled dye laser into an ArF* excimer-...

Objective: Excimer Laser technique can be used to extract leads. We present the European multi-centre experience. Method: The Spectranetics Excimer Laser is a Xenon-Chloride laser with a wavelength of 308 nm, not visible to the human eye. This cool cutting laser (508C) has an absorption depth of 0.06 mm. The laser energy is emitted from the tip of ̄exible 12, 14 or 16 French (Fr) probes and is ...

Management of chronic total occlusions has been refined through the development of a retrograde approach via collateral pathways. We describe here the use of excimer laser coronary atherectomy in the septal collaterals. This appraoch was not yet described in the literature.

BACKGROUND Current vitiligo therapies require many months of treatment and often result in disappointing outcomes. Treatment with a 308-nm excimer laser has shown promising results in patients with vitiligo. OBJECTIVE This controlled prospective trial studied the effectiveness of the 308-nm excimer laser for treating vitiligo in Asians. METHODS Thirty-four patients (14 males and 20 females)...

OBJECTIVE To determine the dose-response relationship of excimer laser-generated 308-nm UV-B radiation for treating psoriasis. DESIGN Pilot study with a before-after design. SETTING A university dermatology service. PATIENTS Thirteen consecutive patients with at least 4 large, stable psoriasis plaques. INTERVENTIONS Excimer laser-generated 308-nm UV-B radiation was given to each of 4 pl...