# Alfred Kastler

> A physicist who found a way to excite atoms with light and read their secrets — optical pumping, the technique that made lasers possible and won him a Nobel.

*French physicist (1902–1984)*

**Canonical URL:** https://fame.am/person/alfred-kastler

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** France
- **Born:** 1902-05-03
- **Died:** 1984-01-07
- **Status:** deceased
- **Gender:** male

## Bio

Alfred Kastler was born in Germany on 3 May 1902 but became French, and spent his career coaxing atoms to reveal themselves. He developed optical pumping, a method of using light to shift atoms into higher energy states so their behavior could be studied with new precision. The work opened pathways into quantum mechanics and laser technology. Physics gave him its highest recognition: the Nobel Prize. He died 7 January 1984, decades after the technique he invented became fundamental.

## Fame
- **Popularity score:** 57.9 / 100
- **Momentum:** 0.0 / 100  (trend: FALLING)
- **Historical depth:** 22.7 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100

## Topics
#Scientists, #Scientist, #Physics, #Poetry, #France, #Europe, #20th Century

## Sources
- [Wikidata](https://www.wikidata.org/wiki/Q71023)
- [Wikipedia](https://en.wikipedia.org/wiki/Alfred_Kastler)
- [Pantheon 2.0](https://pantheon.world/profile/person/Alfred%20Kastler)
- [الفريد كاستلر](https://arz.wikipedia.org/wiki/%D8%A7%D9%84%D9%81%D8%B1%D9%8A%D8%AF_%D9%83%D8%A7%D8%B3%D8%AA%D9%84%D8%B1)
- [Alfred Kastler](https://ast.wikipedia.org/wiki/Alfred_Kastler)
- [آلفرد کاستلر](https://azb.wikipedia.org/wiki/%D8%A2%D9%84%D9%81%D8%B1%D8%AF_%DA%A9%D8%A7%D8%B3%D8%AA%D9%84%D8%B1)
- [Alfred Kastler](https://az.wikipedia.org/wiki/Alfred_Kastler)
- [Альфрэд Кастлер](https://be.wikipedia.org/wiki/%D0%90%D0%BB%D1%8C%D1%84%D1%80%D1%8D%D0%B4_%D0%9A%D0%B0%D1%81%D1%82%D0%BB%D0%B5%D1%80)
- [Алфред Кастлер](https://bg.wikipedia.org/wiki/%D0%90%D0%BB%D1%84%D1%80%D0%B5%D0%B4_%D0%9A%D0%B0%D1%81%D1%82%D0%BB%D0%B5%D1%80)
- [আলফ্রেড কাস্টলার](https://bn.wikipedia.org/wiki/%E0%A6%86%E0%A6%B2%E0%A6%AB%E0%A7%8D%E0%A6%B0%E0%A7%87%E0%A6%A1_%E0%A6%95%E0%A6%BE%E0%A6%B8%E0%A7%8D%E0%A6%9F%E0%A6%B2%E0%A6%BE%E0%A6%B0)
- [Alfred Kastler](https://ca.wikipedia.org/wiki/Alfred_Kastler)
- [ئەلفرید کاستلەر](https://ckb.wikipedia.org/wiki/%D8%A6%DB%95%D9%84%D9%81%D8%B1%DB%8C%D8%AF_%DA%A9%D8%A7%D8%B3%D8%AA%D9%84%DB%95%D8%B1)
- [Alfred Kastler](https://cs.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://da.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://de.wikipedia.org/wiki/Alfred_Kastler)
- [Αλφρέντ Καστλέρ](https://el.wikipedia.org/wiki/%CE%91%CE%BB%CF%86%CF%81%CE%AD%CE%BD%CF%84_%CE%9A%CE%B1%CF%83%CF%84%CE%BB%CE%AD%CF%81)
- [Alfred Kastler](https://eo.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://es.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://et.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://eu.wikipedia.org/wiki/Alfred_Kastler)
- [آلفرد کاستلر](https://fa.wikipedia.org/wiki/%D8%A2%D9%84%D9%81%D8%B1%D8%AF_%DA%A9%D8%A7%D8%B3%D8%AA%D9%84%D8%B1)
- [Alfred Kastler](https://fi.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://fr.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://gl.wikipedia.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://hak.wikipedia.org/wiki/Alfred_Kastler)
- [Wikiquote](https://pl.wikiquote.org/wiki/Alfred_Kastler)
- [Alfred Kastler](https://als.wikipedia.org/wiki/Alfred_Kastler)
- [ألفريد كاستلر](https://ar.wikipedia.org/wiki/%D8%A3%D9%84%D9%81%D8%B1%D9%8A%D8%AF_%D9%83%D8%A7%D8%B3%D8%AA%D9%84%D8%B1)

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