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 ?
NIST has completed a series of measurements to determine the damage threshold and lifetime of optical materials under intense ultraviolet (UV) radiation produced by excimer lasers.
It can also include the software that controls excimer lasers.
The dose measurements are performed using a beam-splitter-based calibration system in which a spatially uniform beam from an argon-fluoride excimer laser is generated using a special beam homogenizer.
The LAMBDA SX 315C is the first in a new generation of high-energy industrial excimer lasers.
The creation of a corneal flap prior to treatment by the excimer laser was added to laser vision correction in the mid 1990s to provide patient comfort and immediate visual results (the two factors credited with the growth and popularity of LASIK).
McDonald performed the world's first Summit/Autonomous wavefront-based excimer laser surgeries; these cases were also the first wavefront-based laser surgeries in the U.
Irwin began developing the second-generation excimer laser for RA Medical about a year after leaving PhotoMedex.
FDA clinical trial for the Technolas(R) 217A Excimer Laser System for LASIK treatment of hyperopia (or farsightedness), for which he was the lead investigator.
In 1997, Emory Vision participated in the first clinical trials for the LADARVision 4000(R) excimer laser system.
PhotoMedex is engaged in the development of proprietary excimer laser and fiber optic systems and techniques directed toward dermatological applications, with FDA approval to market the XTRAC(R) laser system for the treatment of psoriasis, vitiligo, atopic dermatitis and leukoderma.
With this additional approval, the Bausch & Lomb Technolas 217A Excimer Laser System now offers surgeons an expanded, full-treatment range from myopia (nearsightedness) up to -12.
PhotoMedex's excimer laser system generating 308-nm UV-B radiation is the first FDA-approved laser treatment for psoriasis, which is the second most common skin disorder in the U.