Abstract

We present a diffractive phase variable attenuator for femtosecond laser radiation control. It allows the control of beam power up to $0.75·{10}^{13}\mathrm{W}/{\mathrm{cm}}^2$ without introducing serious distortions in spectra and beam shape while it operates in zero order diffraction. The attenuator can operate with wavelengths from DUV to IR.

© 2009 Optical Society of America

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