Author modified contents a little bit. And, this one will be a final virsion.
I realized a drive type of emission beam generated at the surface by using the excitation of the guided mode in a TiO 2 slanted nanograting layer. In the TiO 2 layer, the beam is waveguided along the short axis direction of the grating at a specific injection angle Θ. On the surface of the layer, a beam consisting of leakage generated during the waveguide is emitted. It would generate an afterimage for the waveguide direction. In this work, I performed incident angle-resolved measurements as a purpose to switch (drive) two after image effects at resonance and non-resonance on after imaging, namely gradient and wave-gradient. If this switching is attained, this grating sample is likely to be effective as a novel coupler on a Virtual Reality – Head Mounted Display (VR-HMD).