Free-electron laser

Free-electron laser - type of laser. Article “Free-electron laser” in Simple English Wikipedia has 16.9 points for quality (as of July 1, 2026). The article contains 3 references and 3 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Simple English) language version.

In June 2026 the article “Free-electron laser” was edited by 2 authors in Simple English Wikipedia (1052^nd place) and written by 6 authors in all languages.

Since the creation of article “Free-electron laser”, its content was written by 7 registered users of Simple English Wikipedia and edited by 584 registered Wikipedia users in all languages.

The article is cited 6 times in Simple English Wikipedia and cited 937 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #1052 in June 2026
• Global: #15210 in July 2012

The highest popularity rank from 2008:

• Local (Simple English): #8052 in February 2026
• Global: #45922 in April 2008

There are 27 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Free-electron laser		64.8923
2	Catalan (ca) Làser d'electrons lliures		48.2443
3	Spanish (es) Láser de electrones libres		44.1389
4	Polish (pl) Laser na swobodnych elektronach		42.6425
5	Serbian (sr) Slobodno-elektronski laser		36.9907
6	Serbo-Croatian (sh) Slobodno elektronski laser		36.5927
7	Basque (eu) Elektroi askeko laser		29.0561
8	Russian (ru) Лазер на свободных электронах		24.7396
9	Chinese (zh) 自由电子激光器		22.2463
10	Turkish (tr) Serbest elektron lazeri		21.0121

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "Free-electron laser" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Free-electron laser		1 690 674
2	German (de) Freie-Elektronen-Laser		224 590
3	Russian (ru) Лазер на свободных электронах		154 886
4	Japanese (ja) 自由電子レーザー		138 030
5	Spanish (es) Láser de electrones libres		58 079
6	Chinese (zh) 自由电子激光器		55 797
7	French (fr) Laser à électrons libres		34 101
8	Italian (it) Laser a elettroni liberi		32 618
9	Arabic (ar) ليزر الإلكترون الحر		22 829
10	Persian (fa) لیزر الکترون آزاد		18 778

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Free-electron laser" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Free-electron laser		3 198
2	German (de) Freie-Elektronen-Laser		465
3	Chinese (zh) 自由电子激光器		445
4	Russian (ru) Лазер на свободных электронах		383
5	Japanese (ja) 自由電子レーザー		192
6	Italian (it) Laser a elettroni liberi		91
7	French (fr) Laser à électrons libres		87
8	Polish (pl) Laser na swobodnych elektronach		64
9	Spanish (es) Láser de electrones libres		61
10	Persian (fa) لیزر الکترون آزاد		43

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Free-electron laser" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Free-electron laser		173
2	German (de) Freie-Elektronen-Laser		87
3	Russian (ru) Лазер на свободных электронах		41
4	French (fr) Laser à électrons libres		36
5	Italian (it) Laser a elettroni liberi		34
6	Dutch (nl) Vrije-elektronenlaser		28
7	Hebrew (he) לייזר אלקטרונים חופשיים		23
8	Chinese (zh) 自由电子激光器		22
9	Spanish (es) Láser de electrones libres		16
10	Japanese (ja) 自由電子レーザー		15

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Free-electron laser" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Simple English (simple) Free-electron laser		2
2	Arabic (ar) ليزر الإلكترون الحر		1
3	English (en) Free-electron laser		1
4	Basque (eu) Elektroi askeko laser		1
5	Serbian (sr) Slobodno-elektronski laser		1
6	Bulgarian (bg) Лазер със свободни електрони		0
7	Catalan (ca) Làser d'electrons lliures		0
8	German (de) Freie-Elektronen-Laser		0
9	Esperanto (eo) Liber-elektrona lasero		0
10	Spanish (es) Láser de electrones libres		0

More...

The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Free-electron laser" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Free-electron laser		376
2	German (de) Freie-Elektronen-Laser		82
3	Japanese (ja) 自由電子レーザー		80
4	Russian (ru) Лазер на свободных электронах		61
5	Ukrainian (uk) Лазер на вільних електронах		48
6	French (fr) Laser à électrons libres		37
7	Spanish (es) Láser de electrones libres		29
8	Arabic (ar) ليزر الإلكترون الحر		28
9	Chinese (zh) 自由电子激光器		27
10	Italian (it) Laser a elettroni liberi		25

More...

#	Language	Value
ar	Arabic ليزر الإلكترون الحر
bg	Bulgarian Лазер със свободни електрони
ca	Catalan Làser d'electrons lliures
de	German Freie-Elektronen-Laser
en	English Free-electron laser
eo	Esperanto Liber-elektrona lasero
es	Spanish Láser de electrones libres
eu	Basque Elektroi askeko laser
fa	Persian لیزر الکترون آزاد
fi	Finnish Vapaaelektronilaser
fr	French Laser à électrons libres
he	Hebrew לייזר אלקטרונים חופשיים
hi	Hindi मुक्त इलेक्ट्रॉन लेजर
it	Italian Laser a elettroni liberi
ja	Japanese 自由電子レーザー
ko	Korean 자유 전자 레이저
nl	Dutch Vrije-elektronenlaser
pl	Polish Laser na swobodnych elektronach
pt	Portuguese Laser de elétrons livres
ru	Russian Лазер на свободных электронах
sh	Serbo-Croatian Slobodno elektronski laser
simple	Simple English Free-electron laser
sr	Serbian Slobodno-elektronski laser
tr	Turkish Serbest elektron lazeri
uk	Ukrainian Лазер на вільних електронах
vi	Vietnamese Laser electron tự do
zh	Chinese 自由电子激光器

Best Rank

Simple English: #8052 02.2026

Global: #45922 04.2008

Best Rank

Simple English: #1052 06.2026

Global: #15210 07.2012

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information