Resonant grating pulse compression element with 99% flat top efficiency for high average power femtosecond laser machining
Résumé
Top hat diffraction efficiency in an all-dielectric SiO2/HfO2grating femtosecond pulse compression grating is demonstrated with a close to 100% flat top over more than 20 nm around 800 nm wavelength. New perspectives are open for high average power femtosecond laser machining
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