Talk:Excimer laser

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Excimer lasers (excited dimer) are very important in the fields of optometry and ophthalmology. Equal numbers of males and females, who commonly were pre-existing contact lens wearer have decidided for reasons such as sport, work and inconvienience to have photorefractive surgery performed (laser eye surgery). This surgery should remove any need of spectacles.

there are two main photorefractive procedures. The first is Photorefractive Keratectomy (PRK), and the second is Laser instu Keratomeilus (Lasik.

In both procedures, the laser is used to change the shape of the cornea. For myopes the corneal profile is flattened, for hyperopes the peripheral cornea is abblated effectively flattening the cornea.

PHOTOREFRACTIVE KERATECTOMY

Procedure:

A speculum is inseterd to separate the eye lids. The cornea is anaestatised. The patient fixates on a target. The corneal epithelium is removed via manual, mechanical (amoils rotary brush), or means of alcohol. The laser ablates the cornea at descemets membrane and the anterior stroma.

Post operatively: Pain, poor vision, ocular lubricats given to the patient, the vision will stabalise in 6 to 12 weeks

Complications: (Early), Sterile infiltrates, haloes, glare and mild ptosis.

Removed

I removed this line:

Some examples of excimer lasers:Aluminum Nitride, Aluminum Oxide, Beryllium Oxide, Aluminum Alloy are just some examples.

Since this doesn't seem to be anything to do with excimer lasers. Perhaps someone was mixing them up with semiconductor lasers? --Bob Mellish 19:26, 12 November 2005 (UTC)

I had also removed the table entries for F2, Cl2, and N2 which are of course not excimers (but you sometimes see F2 lasers mentioned in the same context). K64u69 tried to reintroduce F2 but I reverted that, for the same reason. Maybe these UV lasers need mention, but cannot properly be called "excimer" as I understand it. Or change the article to "UV lasers." Interferometrist (talk) 13:20, 4 February 2011 (UTC)

By the way, K64u69 please do NOT mark an edit as "minor" unless it really doesn't change the meaning (beyond fixing a typo) and CAN'T be controversial. If you mark it minor then people don't notice your edit on their watchlist. OK? :-) Interferometrist (talk) 17:26, 4 February 2011 (UTC)

Comment about removal of the F2 laser. The majority of the chemical literature and manufacturers refer to the fluorine laser as an excimer laser. True, the Cl2 and N2 are not usually referred as such. I almost always see the F2 referred to as an excimer.Davidbaddison (talk) 07:02, 6 February 2011 (UTC)Davidbaddison

I don't mind including it in the article as long as the text isn't misleading. But we agree that "excimer" would be a misnomer in the case of F2. With that stipulation it could be mentioned, but there wasn't anything special said about it anyway. How about a line (why don't YOU edit it!) saying that "manufacturers refer to the fluorine laser as an excimer laser...." even though it technically isn't? But please provide a reference then.Interferometrist (talk) 19:49, 6 February 2011 (UTC)

Changed

Changed the longest pulse length to accomendate the Sirius1000 laser. Geraldebberink (talk) 10:20, 24 April 2008 (UTC)

Assessment comment

The comment(s) below were originally left at Talk:Excimer laser/CommentsTalk:Excimer laser/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

The 193 nm excimer laser uses a transition in ArF (argon fluoride), not CaF2 as given in the table. 137.79.19.23 (talk) 18:33, 24 March 2008 (UTC) Kyle Bayes, Jet Propulsion Lab

Last edited at 18:33, 24 March 2008 (UTC). Substituted at 14:50, 29 April 2016 (UTC)

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Excimer Laser Annealing

Excimer Laser Annealing for low temperature polysilicon (LTPS) is a crucial step in the production of cellphone and tablet displays. It's a major application for the excimers, and is used to make the majority of cellphones produced today. This topic should definitely be included here. 70.175.149.15 (talk) 18:11, 24 March 2023 (UTC)

Move page to "Exciplex Laser"

I would like to propose the move to the more generally correct name of Exciplex Laser, as Atkins states clearly in its text. The search for "Excimer Laser" should redirect to "Exciplex Laser", and not the other way around. Kemik0297 (talk) 19:52, 30 August 2025 (UTC)

Requested move 3 September 2025

The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion.

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Excimer laser → Exciplex laserExciplex laser – More general name should be the default, while more restrict case of excimers can be dealt with in the text/redirection Kemik0297 (talk) 19:56, 30 August 2025 This is a contested technical request (permalink). Testtubewaltz (talk) 17:51, 3 September 2025 (UTC)

I oppose the renaming to exciplex.

Excimer vs Exciplex: TLDR: Exciplex is technically more accurate for all but the F2 laser, but eximer is the common term. Wiki MOS prefers the common term that matches literature.

Notes on which name (excimer vs exciplex) is more common:

* Pubmed currently has 5820 search results for "excimer laser", compared to 

• "exciplex laser" having zero hits, despite many of the lasers described technically qualifying as an exciplex laser Many of the articles describing excimer lasers refer to pyrene-solvent excimers (technically exciplexes)

Summary: name most frequently used for this device is an excimer laser.

Consistency: The wiki page for Excimer lamp includes both homo- and hetero-pairs of lasing media, both included without clarification.

Exciplex is a trademarked name of a handheld monochromatic eximer product marketed by Clarteis ( https://www.exciplex.co.uk )

The definition of eximer vs exciplex varies slightly depending on authors, but is normally consistent.

• Excimer appears to be the preferred term for interaction two identical molecules.
• Exciplex appears to be the preferred term for two or more dissimilar molecules.

Here's some excimer vs exciplex definition examples from a quick search on science direct:

Examples:

• "Excimer or exciplex are the dimeric or heterodimeric short-lived species which can be generated in the excited state, but dissociate in the ground state. Generally, the homodimeric species in the excited state is termed as the excimer, whereas the heterodimeric species is known as the exciplex."
• "In concentrated solution, a new excited species (excimer, or exciplex if between dissimilar molecules) containing one excited molecule (M*) and a ground state (M) is formed in equilibrium with the separated species ..." (consistent)
• "Excimers and exciplexes are complexes formed in the excited state.113 Here, excimer refers to the specific case of an “excited dimer” meaning that two identical molecules interact. Exciplex is the more general term referring to an “excited complex” of any two molecules. The process of exciplex formation is often written in the form" (consistent)
• "The laser-induced excited-complex fluorescence (LIEF) is a variant of LIF using two tracer compounds which in the excited state form an excited-complex. The excited-complex is also referred to as exciplex, for which reason LIEF is also called laser-induced exciplex fluorescence." (consistent)

There are many literature examples using the term "excimer laser" exciplex would be more accurate, but the excimer nomenclature is dominant in both chemistry and medicine/life sciences:

Pure chemistry:

• PMID: 19684755 DOI: 10.1364/ol.3.000226 , "... the technique also shows great promise for locking ultraviolet excimer lasers, such as krypton fluoride and xenon chloride lasers, using a visible dye for the slow saturable absorber."
• PMID: 19687910 DOI: 10.1364/ol.4.000378 " ... action on atomic transitions of Ga, In, Al, and Bi has been obtained by using an ArF excimer laser to photodissociate ...."
• PMID: 7252066 DOI: 10.1080/03601238109372262 , "We used the excimer lasers ArF (193 nm), KrF (248 nm), XeCl (308 nm), and quadrupled Nd:YAG (266 nm) as well as a pulsed CO2 laser." (Pure chemistry)
• "An injection-locked XeCl excimer laser serves as the radiation source"

Life science/medicine

• PMID: 18354612 DOI: 10.1364/ao.39.006072 PMID: 11572223 DOI: 10.1089/clm.2000.18.295 , "...study reports the use of the ArF 193 excimer laser, under conditions of strict control of frequency"

• PMID: 11134871 DOI: 10.1016/s0886-3350(00)00639-8 " had LASIK using the Hansatome automated microkeratome (Bausch & Lomb Surgical) and a 193 nm argon-fluoride excimer laser (Summit SVS Apex Plus)."

Common usage:

• Commercial usage: The manufacturers of lasers based on an exciplex describe them as excimer lasers, even when the lasing medium is TECHNICALLY an exciplex. (Dermatology, opthamology, dentistry, Coherent, edmund optics, thorlabs, etc)

While I absolutely agree the term exciplex is more accurate for hetermolecular interactions to power a laser, the common use is excimer.

I liken this to how the word "decimate" is currently used - to lay to waste, not to destroy 10%. I can't stand it, but I've got to adapt to the common usage. Even if it hate technically incorrect terminology. Testtubewaltz (talk) 17:51, 3 September 2025 (UTC)

This is being discussed at Wikipedia:Requested_moves#Contested_technical_requests where I registered Oppose Johnjbarton (talk) 15:33, 4 September 2025 (UTC)

Oppose – WP:COMMONNAME Andy Dingley (talk) 22:45, 4 September 2025 (UTC)

@Testtubewaltz has made a great point for keeping the current title, which I now agree, since the exciplex name is correctly dealt with in the text. Thanks for the discussion, guys! Kemik0297 (talk) 17:55, 8 September 2025 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Requested move 4 September 2025

The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion.

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Excimer laser → Exciplex laserExciplex laser – More general name should be the default, while more restrict case of excimers can be dealt with in the text/redirection Kemik0297 (talk) 19:56, 30 August 2025 This is a contested technical request (permalink). Testtubewaltz (talk) 15:38, 4 September 2025 (UTC)

Oppose – per WP:commonname. See lengthy explanation on article talk page. Testtubewaltz (talk) 15:38, 4 September 2025 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.