Z-scan sensitivity enhancement using a binary diffractive optics

Renaud de Saint Denis (1) , Michael Fromager (1) , Emmanuel Cagniot (1) , Kamel Aït Ameur (1)

1 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique

We report a theoretical study of the sensitivity enhancement of Z-scan technique, using a simple binary diffractive optical element. The latter is a phase aperture made from a transparent plate that has a circular relief introducing a π phase shift in the central region of the incident beam.We demonstrate that the phase aperture acts like a divergence multiplier allowing the Z-scan sensitivity to be increased by a factor of several hundred.

Domaines: Optique [physics.optics]

Renaud de Saint Denis, Michael Fromager, Emmanuel Cagniot, Kamel Aït Ameur. Z-scan sensitivity enhancement using a binary diffractive optics. Applied Physics B - Laser and Optics, 2008, 90, pp.513-517. ⟨cea-00324576⟩