According to the equation on peak intensity plane of 3-D interference fringe, a general formula on the highest space-frequency of holographic grating structure with wide angle and great scene is derived, analyses on reasonable choice of recording parameter in the holographic experiment of wide angle and great scene is discussed, and the corresponding experimental results are given.

The thermal relaxation rates of the vibrational levels (0001) and (1000) of CO2 molecules in a discharged positive .column have been measured by OGE. The dependences of the thermal relaxation rates on the incident intensity, discharge current, pressure and foreign gasea have also been investigated. The approximate values of T001 and T100 obtained are 0.6-1.5 ms and 0.2-0.8 ms respectively.

The property of multi-exposure recording of dichromated gelatin (DCG) enabled us to practice the image subtraction "based on multi-exposure speckle technique experimentally. The presented theoretical analyses are in good agreement with the experimental results.

Self-generated magnetic field in the corona area of laser plasmas has been measured using Faraday-rotation method of 630.3 nm probe beam. Experimental results prove that "thermal force source" which Golombant has suggested theoritically is one of the imprortant sources which produce self-generated magnetic field.

Ways are put forward for making amplitude filters by picking out the phase transfer function and for making phase filter by grating and hologram. Tranfer function independent of frequency for electron micrograph deconvolution is obtained, which improves the resolution of electron micrograph.

This paper reports the investigation of mode-locked dynamics of passively mode-locked dye lasers by picosecond streak camera and the optimization of passively mode-locked dye laser operation is obtained.

The structure of an experimental laser measurement equipment fluorescent spectral analysis of silkworm cocoons and selection of its main optical elements are briefly described.

High power laser cladding of NiGrSiB alloy on A3 steel plate was performed. Surface with excellent performances of high creep and oxidation resistance equivalent to nikel base superalloy K5 has been obtained. The superlattice BNigSi and the long-period structure were first observed in NiOrSiB alloy laser cladding casings.

This paper presents the experimental results in measuring a micrometer order displacement of vibrating objects based on laser-Doppler effect.

This paper reports the experimental set up and results of the picosecond blue laser emission generated from ultrashort cavity chlorophyll (chl) dye laser excited by inter-molecular energy transfer from excited coumarin (co) molecules to chl a and b pigment molecules.

The emission spectra of four dye mixtures pumped by N2 laser are studied. These mixtures are rhodamine 6G+crestyl violet, rhodamine B+crestyl violet, rhodamine 6G +rhodamine B and rhodamine 6G+rhodamine B+cz-estyl violet. The energy transfer processes in the mixtures are discussed. It has been shown that the broadening tuning range of dye lasers, the increase of laser efficiency of some dyes and dual wavelength laser oscillation in the dye mixtures are feasible.

Based on the waveguide laser theory, output lines and line-chopping phenomenon of intracavity CO2 lasers with =3~6mm and N-1arestudied.lt shows the result of the participation of waveguide mode loss d11 in the line competition process.

Eaman spectra of nonlinear crystal KTiOPO4 of superior quality are reported. Various mo’des of vibration are obtained with different kinds of geometry, and their relative Raman tensor intensities are determined, and the relationship between the spectra and its crystal structure is discussed.

Starting with the equations for nonlinear pendulum by which superradianca can be approached the analytical expression for superradiant field dispersion is abtained by means of the quantum result for initially squeezing in’ superradianee, the dependence of squeezing on both time and initial conditions are discussed and the optimum squeezing point has been found.

Cooperative effects were observed in the near-resonance electronic Baman scattering experiments of XeCl excimer laser pulses in Pb vapor. The Baman-radiation pulse shapes obtained by numerically solving the two-level Bloch-Maxwell equations were found to be qualitatively consistent with the experimental results.

The data was treated with best linear undistorted estimation (BLUE)and the lifeteime of He-Ne laser was computed, the results were in good agreement with the experimental ones.

Experimental results of laser output of nile blue A sulfate-xathene in ethyl aloohol under coaxial flasHamp pumping are reported. Owing to the sensitization effect of rilodamine 6G the laser conversion efficiency of nile bule sulfate has been increased by 80%

A single-flashlamp and donble-ruby-rod laser is made. Its design consideration and structural feature are presented and its output synchronism of double laser beams is discussed preliminarily.

The design of a practical, low-cost gold vapor laser with simple structure is described. Maximum average power of 700 mW in 627.8 nm red light has been obtained for a small active volume of 33 cm*. During 450 hours of operation the laser device of such a design worked reliably.

Absorptive optical bistability in InSb has been observed. The functional relation and graphic analysis of incoherent mirrorless optical bistability are given. Tha analytical method used here can be extended to other bistable systems. The theory is in good agreement with the experimental results.