Rotators For >50W Average Power:

When passing >50W of average power through a Faraday rotator, several effects related to residual absorption in the TGG rotator crystal can occur, degrading the performance of a Faraday rotator. Such effects can include thermal lensing, birefringence, depolarization or heating of the rotator which results in a change in the amount of Faraday rotation provided. EOT has extensive experience in designing and manufacturing Faraday rotators for high average power applications. EOT has shipped rotators having up to 33x7mm apertures for average powers of up 1KW. Many scientists and engineers working with very high average power lasers commonly work with beam shapes that are rectangular, with a high aspect ratio. Such a beam shape can often benefit their laser design through efficient heat removal across the narrow dimension of their beam. EOT has the know how and experience to make magnet structures with rectangular apertures to derive full benefit from such beam shapes at average power levels up to, and beyond, 1KW. The photos below give some examples of devices shipped for specific customer requirements.



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