This paper reports the experimental results on the LiF:F2- laser pumped by a Nd3+: glass laser. The stability of F2- colour centers are discussed.

A XeCl excimer laser excited by longitudinal gas discharge is reported. The laser output was increased by means of preionization to improve the discharge uniformity. The main performances of the laser output were measured. The laser pulse duration was 35 ns and the maximum laser energy being 317μJ with an efficiency of 0.29%.

This paper describes a CW waveguide laser operating at DCN lines at 195μm and 190 μm and presents the experimental results and the relationship between the output power and other parameters.The laser cavity consists of a fused quartz tube of 4.8 cm in diameter, 2.5m long. The maximum output power of the laser is of the order of 30 mW.

A planar self-waveguiding dye laser driven by a four xenon flashlamp system with an average output power of 3 W at 30 pps is presented. The laser takes advantage of the non-uniform distibutrion of the refractive index by the pumping pulse in the active medium, and allows full utilization of the highest gain region of the dye solution.

The experimental results of PTM Q-switehing ruby laser are given. By passing through two amplifiers, the pulse width of 4.5 us and the energy of 2.5 j of the laser pulse can be obtained.

The design and experimental results of a new polarization-independent optical circulator are reported. It consists of a polarizing splitter, a polarizing combiner, a Faraday rotator and a half-wave plate. Insertion losses of 2.8 db and isolation of 18-35 db were obtained for different polarization directions of incident light at 1.37μ/m.

The study of power output from free electron lasers (FEL) has shown that to gain higher output power the FEL at infrared region is better than those at the ultraviolet. Superradiation generation, operational conditions have been obtained in which the pulse width of the relativistic electron beam and the transmission of resonator eavity were studied The effectof energv divergency of the relativistic electron beam △r0/r0 on the energy conversion ef flcieney hasalso been discussed.

A pulsed tunable dye laser was used to measure the optogalvanie spectrum of 76 transitions of neodymium, among them 15 are from NdII. The transient waveform of the optogalvanie signal was observed.

Measurement and analysis have been made on the target voltage induced by the effect of spatial charge seperation at various power densities. Target voltage of several KVs and the duration of or within a few nanoseconds have been measured when a 1.06μm laser beam (100 ps) is incident normally on an Al plane target at the power density ranging from 2 × 1014 to 8 × 1014W/cm2.

Investigating the speckle pattern of a cross-slit theoretically and experimentally, we note in this paper that the object surface speckle pattern recorded on the recording plate has a 2-D gratingwise structure. After performing an optical Fourier transform on it, at the Fourier transform plane there appears a particular optical intensity distribution, a bright sharp cross-shape halo superimposed on a uniform square-shaped halo. Hence, the laser speckle photography with a cross-slit aperture will offer good quality interferogram with high contrast, low noise, and high sensitivity. Furthermore, the cross-shaped halo facilitates the measurement of fixing the original orientation of object motion as a reference coordinates. The experimental results are well consistent with the theoretical prediction.

A spark gap switch operating at 60 kV and 50 pps has been developed. At steady-state gas fill and 20 pps, it has a lifetime of about 20 min.

This paper reports the results on a detailed investigation of the refractive index of TiO2, ZrO2, Ta2O5 SiO2 films at different evaporation conditions.

A YW-1 argon laser was used for microirradiation of PTK1; PTK2 cell lines and human red blood cells. The smallest lesion spots were only 0.5 Dm. Cytochemistry analysis demonstrated that the laser mierobeam irradiation can destruct both nucleolar DNA and RNA without any vital staining.

The electronic absorption spectra and laser resonance Raman spectra of eight types of singular component of hemoglobin from the blood of normal persons, one a-and two β-thalassemia patients were studied. The correlation of their spectra, molecular structures, respiratory function and pathogenetic mechanism were for the first time analyzed and discussed in coordination with clinic.

We have obtained single frequency output from a CW dye laser with standing wave and traveling wave cavities.

The effects of diluent gas on XeCl lasers are studied. The output energy is increased using Ar rather than He as diluent gas and the total gas pressure and operation cost are decreased.

The polarization behaviour of an intra-cavity He-Ne laser at 632.8 nm has been experimentally studied and discussed.

The experimental results with an improved wavelength resolution have been obtained by using beam expanding plane grating cavity and single transverse mode(TEM00).

The results of this study show that laser irradiation of the acupoint "Jou Cho" of sheep and goat can regulate peristalsis of romen, improve their appetite and alimentary function and inereasce secrete of parotid saliva evidently.

A ceramic covered with enamel has excellent absorption in UV region, it is used as diffuse cavity for ruby lasers.