The principle and the method of local reference beam generation for holography are described. A 35mm portable holographic camera developed by the authors is taken as an example to show the feasibility of the principle. It has been proved that this holographic camera has the ability to diminish the effects of disturbances on holography recordings and some experimental results are presented.

A new method for optical image differentiation is presented. By means of encoding the differential information of images by grating encoding, low-pass filtering and polarization filtering, the differential results of the optical image are obtained by decoding in a common with white-light optical system. This method is simple and easy to operate, it has other merits of white-light processors.

This paper discusses the thermal fatigue behavior of laser alloying layer of Cr and Mo for 45# steel. The test shows that the laser alloying layer exhibits better thermal fatigue properties than 45# steel and conventional work tool steel. The machanism of thermal fatigue crack initiation is also discussed.

Practical design of the resonant cavity for a RF free electron laser at 10.6 μm is proposed. For a given cavity length, the parameters, including the curvature of reflector, waist radius and spot size on reflectors, are calculated according to the Gaussian profile. The problem of spatial match between the radiation and the beam in a long narrow waveguide has been solved and the synchronization is discussed.

The single-transverse mode laser diode was developed. A practical moduled fiber pigtail consisting of light and temperature control element and end fiber was fab ricated with domesticelemeuts, its basic properties meet requirements of practical optical fiber communic ation.

The main point of the hydrodynamic model of electromagnetic field [13,14] is that; the motion of the electromagnetic field can be divided into two parts, the orbital motion and the intrinsic motion. In this paper we to define intrinsic angular momentum deduced from the intrinsic motion and a related i (imaginary number) operator. Besides, the conservation property of the intrinsic angular momentum, the relations between the spin angular momentum and the intrinsic angular momentum of an electroma-gnetic field are described.

A PTGS (Pinhole Transmission Grating Spectrometer) has been developed successfully for laser plasma soft X-ray emission (0.5-20nm) studies. Fundamental principles of imaging and dispersion of the key element PTG (Pinhole Transmission Grating) are presented in detail. Methods of determining the grating parameters and calculation of the real spectra are given.

The structure of ZnS interference filter is presented, and the multi-logic bistable devices are developed using reflective and transparent light at the same time. This multi-logical device can greatly enhance the efficiency of the optical system.

CW Ar+ laser irradiation was used to recrystallize a-Si film, and the grain was increased to more than 10×40μm2, the concentration profile of impurities became uniform and the electrical properties of SOM were improved significantly. The pressure transducer made of this material has a pressure sensitivity of 6 mV/V at the pressure range of 1 bar.

Numerical calculation of TEm mode dispersion relation and evolution in three-layered slab waveguide is presented. A linear dielectric layer is bounded by two nonlinear dielectric layers. The discussion is focused on both self-focusing and self-defocusing medium. Some results with potential applications are given.

It is reported that the optical damage was almost not observed in the proton implanted guides, and the damage resistance of proton exchanged guides in magnesium-doped lithium niobate is twice as large as that of undoped ones, and is at least 8 times that of the titanium-indiffused guides.

A novel of phosphate laser glass with hign corrosion-resistance and favourable spectral and laser properties has been studied and developed. The pump/fracture threshold power of this glass treated by ion exchange strengthening process can be increased notably.

Composition spectral, absorption as well as physical-chemical properties of antidazzle glasses have been investigated, and a sort of antidazzle glass has been obtained with greater absorption in UV and infrared spectral ranges and good performances.