# Newly Observed Effect Makes Atoms Transparent to Certain Frequencies of Light

**Source**: https://aph.caltech.edu/news/newly-observed-effect-makes-atoms-transparent-to-certain-frequencies-of-light-1
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Newly Observed Effect Makes Atoms Transparent to Certain Frequencies of Light

# Newly Observed Effect Makes Atoms Transparent to Certain Frequencies of Light

April 27, 2023

A newly discovered phenomenon dubbed "collectively induced transparency" (CIT) causes groups of atoms to abruptly stop reflecting light at specific frequencies. [[Caltech story](https://www.caltech.edu/about/news/newly-observed-effect-makes-atoms-transparent-to-certain-frequencies-of-light)]

Written by

Robert Perkins

Artist's visualization of a laser striking atoms in an optical cavity. Credit: Ella Maru Studio.

Andrei Faraon

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