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Why are the pulses from my femtosecond Ti:Sapphire laser being broadened after passing through my broadband rotator/isolator?

April 26, 2017broadband broadened femtosecond isolator laser passing pulses rotator sapphire TI

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Why are the pulses from my femtosecond Ti:Sapphire laser being broadened after passing through my broadband rotator/isolator?

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The pulse broadening is due to dispersion in the TGG. The Sellmeiers Equation for TGG can be found in the Faraday Rotator/Isolator Application Notes section of this website and can be calculated using the Sellmeiers Calculator on this website.