excimer laser


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excimer laser

[′ek·sə·mər ‚lā·zər]
(optics)
A laser containing a noble gas, such as helium or neon, which is based on a transition between an excited state in which a metastable bond exists between two gas atoms and a rapidly dissociating ground state.

excimer laser

A gas laser in which a very short electrical pulse excites a mixture containing a halogen such as fluorine and a rare gas such as argon or krypton. It produces a brief, intense pulse of ultraviolet light. The output of an excimer laser is used for writing patterns on semiconductor chips, because the short wavelength can write very fine lines. In fiber optics, it is used to write fiber Bragg gratings. See ultraviolet light.
References in periodicals archive ?
This pivotal clinical trial is a multicenter, prospective, open label, non-randomized study being conducted in the United States, evaluating the effectiveness of the Technolas Teneo 317 (model 2) excimer laser in LASIK surgery for myopia or myopic astigmatism.
Novel use of a high-energy excimer laser catheter for calcified and complex coronary artery lesions.
The ablation process for polymer waveguides using excimer laser is intricate involving several process parameters and material properties.
Letter: Punctate leucoderma after low-fluence 1,064-nm quality-switched neodymium-doped yttrium aluminum garnet laser therapy successfully managed using a 308-nm excimer laser. Dermatol Surg.
On the other hand, there are no longterm studies that have investigated the results of this surgery using the Allegretto Wave Eye-Q 400-Hz excimer laser platform (Wave-Light AG, Erlangen, Germany).
The excimer laser combines argon and fluoride gases which, when excited, produce a cold ultraviolet beam of light (193nm).
There is no need of using toxic gas and it has least noise levels in the operation theatre, less maintenance costs and the greatest advantage is its ready to use option anytime unlike with excimer laser. The repetition rate of solid state laser is 300hz, much higher than in the excimer laser.
Structural, surface morphology and electrical properties of laser irradiated aluminium antimonide using 500, 1000, 1500 and 2000 KrF Excimer laser shots are presented in this study.
Food and Drug Administration approved the 193 nm argon-fluoride excimer laser for phototherapeutic keratectomy (PTK) procedures in 1995, a variety of anterior corneal pathologies have been treated by PTK with promising results [1].
In the release, Sercel said that while the company will "continue to sell our UV and excimer laser systems as well as systems which use DPSS lasers, we strongly believe there are significant growth opportunities using advanced fiber lasers to displace traditional laser sources in high-growth applications."
UV lasers operating at wavelengths below 300 nm (266 nm DPSS lasers and 248 nm and 193 nm excimer lasers) are the preferred lasers for this application, with 193 nm excimer being the laser of choice for many of these polymers based on optimum laser-material interaction properties.
Among the specific topics are a comparison between conventional thermal treatment and excimer laser irradiation performed on alumina/PEEK composite coatings, oxidation behavior in thermal barrier coatings on copper substrates, and damping properties of hard coatings for engine applications.