Crystal of photorefractive effect and optical storage
This is a typical integrated physics experiment for nonlinear optical undergraduate ,the experiment includes nonlinear optical of low-intensity light, two-wave coupling theory, Bragg diffraction theory, photorefractive three-dimensional holographic data storage technology, optical Fourier transform, nonlinear optical properties of crystal material and other basic knowledge. Through experiment, students can not only understand the basic physics knowledge, but also learn some advancing edge of photonics technology. The most important thing is that the experiment can lay a good foundation for actual scientific research ability of students. Through preparing the experiment, reading the literature, observing experiment phenomenon, measuring and analyzing the experimental data and summary, the practical ability, scientific thought, experiment technology, experimental skills. techniques and so on are all obtain good exercises.
Experiment contents and related subjects :
Observe photorefractive effect phenomenon
“fan-shape” effect
Scattered light cone
 Measurement of the basic optical properties of doped lithium niobate
    Measurement of the response time
Measurement of the diffraction efficiency (crystal refractive index modulation)
Measurement of the grating (information) read out lifetime
Three--dimensional holographic information storage experiment
   Write and erase experiments of a single grating (information)
    Pieces of information storage experiment - storage multiplexing mode (angle multiplexing and spatial multiplexing)
Features of the instruments:
The experimental equipment components are open, contents are rich and more idiomatical experiment may be designed according to requirement.
It is the practical application of the combination of basic optical knowledge and advanced photonics disciplines.
 Complete set of equipment:
Green laser(532nm)
Various optical equipments: pinhole filter, magnetic stand, line one, two and three-dimensional adjustment frame, beam upgrade, precision rotating platform , three-dimensional rotating platforms and etc.
Various optical components: polarization beam splitter, wave plate, beam expander lens, collimating lens, Fourier lens, reflector, flat crystal, adjustable tapered circular attenuator, photorefractive crystals and etc..
CCD camera and monitor.