Compression Of F - P Cavity Optical Device And Imaging System Research

With the development of science and technology, light source, optical imagingsystem, detection equipment and software are widely studied to improve the quality ofimage. On the basis of the high resolution quantum imaging techniques research,measurement with F-P cavity in the squeezed light experiment and optical imagingsystem are investigated in the paper. The F-P cavity is used to monitor the stability ofthe output of laser in the generation of squeezed light. The finesse of the cavity is alsomeasured. A two-cavity F-P structure is presented and the characteristics oftransmission spectrum are analyzed. The imaging systems are presented for theexperiment and an optical imaging system is designed for the camera. At last, we alsogive the resolution test results of active imaging with infrared squeezed light andinfrared coherent light.The main research works are as follows:1. The study of using temperature controlled F-P cavity to monitor the stabilityof the laser and the measurement of finesse are carried out. The temperaturecontrolled F-P cavity is used as a sensor to monitor the stability of the laser. Thetheory of finesse measurement is also introduced and the finesse is about150.2. The two-cavity F-P structure used in squeezed light is presented and thecharacteristics of transmission spectrum are investigated. The two-cavity F-P structureis designed to generate single mode and narrow band-width laser. The characteristicsof transmission spectrum for the two-cavity F-P structure are theoretically analyzed.The influences of mirror reflectivity, cavity length on transmission, FSR and FWHMof the structure also have been investigated.3. The optical imaging system is designed and the resolution test experiment iscarried out. The imaging systems used in the experiment are listed. The accuracy ofthe measurement is calculated according to the parameters of the CCD camera and themagnification of the lens. The methods of imaging system designing are introduced and the imaging system with F number=2, effective focal length=12mm and field ofview=41.6°is presented. The experiments of resolution test are carried out withinfrared squeezed light and infrared coherent light under the same condition. Theresults indicate that the resolution of active imaging with infrared squeezed light is1.3times that with infrared coherent light.