The Studies On Measuring Technology About Polarization Properties In Lasers

Polarization, regarded as one of the essential attributes of light, not only its position is equivalent to light's other main attributes such as amplitude, frequency, location looks, more importantly, it can also be used as information modulation carriers: the polarization states of the light beam that the object launches or reflects carry abundant information of the object; the course of using polarized light interacted with the to-be measured object happens to be that of loading the information of the object to the polarized states of light beam, the measurement and analysis of the polarization states is equivalent to the course the demodulation of the loaded information, therefore we can obtain the information of the to-be-measured object.The system that we build introduces the method of dividing the amplitude method in the design of the light way, expands single light way into four ways, and uses four photodiode with standard made in unison to receive and survey the light intensity. We have done some concrete work in such aspects as the choosing of the device, design of light way, establishment of the procedures, error analysis, and develop a system of Stokes parameter measurement, which integrates light, machine, electricity and calculation.