# Detection of high-frequency gravitational waves using high-energy pulsed lasers

- Institution: CERN
- Department: TH institutes
- Speaker: Georgios Vacalis
- Year: 2023
- Language: English
- Subjects: Earth and environment
- Source: [CERN](https://videos.cern.ch/record/3020072)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

We propose a new method for detecting high-frequency gravitational waves (GWs) using high-energy pulsed lasers. Through the inverse Gertsenshtein effect, the interaction between a GW and the laser beam results in the creation of an electromagnetic signal. The latter can be detected using single-photon counting techniques. We present the minimal strain of a detectable GW which only depends on the laser parameters. Interestingly, we find that a resonance occurs in this process when the frequency of the GW is twice the frequency of the laser. With this method, the ultra-high GW-frequency range 10^{13} - 10^{19} Hz is explored non-continuously for strains $h \gtrsim 10^{-20}$ for current laser systems and can be extended to $h \gtrsim 10^{-26}$ with future generation facilities..

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## Lectures

1. [Detection of high-frequency gravitational waves using high-energy pulsed lasers](https://invisiblenetwork.ai/learn/cern/3020072/ff6ee5c4f234), 17 min (CERN's player)