The present paper introduced cardinal works on the collection and preservation of tea germplasm and tea breeding in hubei province,and looked forward their prospects in the period of "Eleventh-Five Year Program".

Due to the saturation absorption characteristic of bacteriorhodopsin film, in holography, when the intensity of the recording light is higher than the saturation intensity, the distribution of the transmission of the holographic gratings deviates from the cosine shape.

Fiber lasers using carbon nanotube as saturable absorber;

The laser is composite of a passively Q-switched laser with a saturable absorber placed in its cavity and a controlling LD with a focus system which is used to control the bleach degree of the absorber.