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Discover more about this technology on the Einstein Telescope website

The Einstein Telescope (ET) will be a very precise interferometer to measure gravitational waves. In the ET, a laser beam is split and sent in two different directions. The reflected laser light from the two directions is combined, which produces a specific interference pattern. The requirements for the lasers are exceptionally high. The laser source must have an extremely narrow line width and high stability. These qualities must be maintained, despite the fact that high power is also required. Laser sources are already quite common for a wavelength of 1064 nm. For the ET, new lasers must be developed that operate at wavelengths of around 1550 nm or 2090 nm.&nbsp;This technology is not yet fully mature and offers opportunities for further improvement and cost reduction.Examples of challenges that COMET addresses within this technological domain include:<ul><li>Wavefront measurements at RF modulation frequencies, with high resolution</li><li>Control systems for mirror surface deformation</li><li>Modelling of complex opto-mechanical systems at the picometre scale</li></ul>Would you like to know whether your technology or development challenge fits within COMET? Test your project idea without obligation<a href="https://www.comet-interreg.eu/test-your-idea" target="_blank" rel="noopener noreferrer nofollow"> via our form.</a>