Session Index

A single-pixel spectral camera composed of optical coding masks, a spectrometer, and a decoding computation has the important feature of no image sensor for imaging, therefore it has very simple optical and electrical architecture. A new implementation of the optical coding masks is a novelty of our research. The optical coding masks are composed of holes on a substrate, and arranged on the circumference of a disk enables us to switch with a rotation of the disk. The main feature is small wavelength dependence other than air for wideband spectral imaging.

 

Recent advances in holographic materials and their combinations into hybrid structures will be discussed and their functionality demonstrated. We employed the interplay between the ability of inorganic materials to generate space charge field together with the high birefringence of organic materials into variety of electro-optically and all optically controlled devices. In addition it is found that the heterostructure consisting of graphene on the photoconductive substrates allows the space charge distributions to be written or erased in an all-optical fashion. The proposed light-assisted approaches demonstrate carrier density modulation in graphene using surface activated photorefractive phenomena. The prime significance of above hybrid structures is the ability to act as holographic gratings at Bragg matched coupling regime which opens numerous opportunities for sub-micron spatial resolution, providing super-fast response time, lower power consumption, broader viewing angles and high contrast ratio. Besides, simple fabrication procedure on large area with uniform modulation properties are critically important for rigid and flexible devices applications.

 

A fringe projection technique embedded into a microscope to perform 3D velocity measurements is presented. Only one-shot measurement is required. The full-field property makes it possible to inspect several objects at the same time.

 

In this paper we study aligning properties of Aluminum doped Zinc Oxide (AZO) films. Electrical and optical properties of atomic dispositioned layers was first shown suitable for application. Characterization of liquid crystal device using so prepared films simultaneously as electrode and alignment layer was made.

 

In this paper, we study a new scheme with planar mirror and well-structure to improve storage capacity by reducing consumption of the holographic storage material. Accordingly, we can precisely describe wave propagation in the system, and predict the effect on the diffracted signal by the planar mirror at different location.