Excimer laser
Excimer Laser
Excimer laser (pronounced as eks-uh-mer lay-zer) is a form of ultraviolet laser that is commonly used in the production of microelectronic devices, in laser eye surgery, and in micro-machining. The term "excimer" is derived from the terms "excited" and "dimer", indicating the formation of a short-lived dimer in an excited state that is responsible for the laser action.
Etymology
The term "excimer" is a portmanteau of "excited dimer". In the context of lasers, it refers to a dimer that is formed from two, typically rare gas atoms, which is in an excited state. The term "laser" is an acronym for "Light Amplification by Stimulated Emission of Radiation".
Usage
Excimer lasers are used in a variety of applications. In the field of ophthalmology, they are used in procedures such as LASIK and photorefractive keratectomy (PRK) to reshape the cornea and correct vision problems. In the field of microelectronics, they are used in the production of semiconductor devices, including the etching of silicon wafers. They are also used in the field of material science for micro-machining, due to their ability to remove material with precision and without causing heat damage.
Related Terms
- Ultraviolet: A type of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays.
- Microelectronics: The study and manufacture of very small electronic designs and components.
- Laser eye surgery: A type of refractive surgery for correcting myopia, hypermetropia, and astigmatism.
- Micro-machining: The technology of creating structures and parts in the micrometer scale.
External links
- Medical encyclopedia article on Excimer laser
- Wikipedia's article - Excimer laser
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