Strong free-carrier electro-optic response of sputtered ZnO filmsLorenzo Dominici, Matthias Auf der Maur, Francesco Michelotti
- Journal of Applied Physics, January 2012, American Institute of Physics
- DOI: 10.1063/1.4749404
Free carrier phase modulation in zinc oxide films
What is it about?
The electric modulation of the phase of light passing through a thin zinc oxide film sandwiched between a transparent and a reflecting contact layer.
Why is it important?
We demonstrate the strong phase modulation due to the effects of free carriers by means of a sensitive nonlinear ellipsometric setup. This is important in electro-optic modulator or polarization control and it is studied on a versatile material such as zinc oxide which can feature plasma resonance in the near infrared upon doping.