We can get the beat frequency signal of the reference laser and a CW modulation spectrum with the spectrum analyzer,and then have the relative electric field strength of the various optical frequency of a CW laser modulation spectrum through the corresponding mathematical calculation so as to realize the CW modulation spectrum analysis.

Using single-shot chirped pulse electric-optic detector technique, the absolute electric field intensity can be obtained by tuning the angle to 45°, which is between crystal axis of quarter wave-plate (QWP) and linear polarization direction of detection laser.

A Study on Evaluation of Relative Strength for Different Polymer Gels Used at Oil Fields;

The early-age relative strength-simplify maturity equation was concluded from this research and the relative strength when simplified maturity reached 600d was discussed.

Based on the preliminary researches on tube clearance, overdistension measure, total distension measure, weld relative strength, destructive pressure test in producing copperaluminum combined columnwingtype radiator, discusses crucial skills to improve the technical and provides the basis for manufacture and standardization of the radiator.