CAJ | 학술논문

为了研究平面波经微小孔衍射的能量集中度,运用严格的矢量衍射理论以及非傍轴光束横截面上光强的精确表示和功率密度表示,进行了详细的数值计算和比较研究.研究结果表明,衍射光束的能量集中度与传输距离、衍射孔径、光斑半径等参量有关,通过对光学系统参量的控制,可得到合适的能量集中度.这些结果对光纤探针能量传输特性的研究具有重要意义.
위료연구평면파경미소공연사적능량집중도,운용엄격적시량연사이론이급비방축광속횡절면상광강적정학표시화공솔밀도표시,진행료상세적수치계산화비교연구.연구결과표명,연사광속적능량집중도여전수거리、연사공경、광반반경등삼량유관,통과대광학계통삼량적공제,가득도합괄적능량집중도.저사결과대광섬탐침능량전수특성적연구구유중요의의.
In order to study the energy focus ability of the beam diffracted by a small circular aperture,based on the rigorous vectorial diffraction theory and the accurate expression of light intensity,the power density expression of nonparaxial diffraction beam at the transverse plane,detailed numerical calculation was performed and the different results were compared.It showed that the energy focusability of the diffraction beam depended on the transmission distance,diffraction aperture and facula radius,and appropriate energy focusability could be obtained by controlling some parameters of the optical system.The results have some reference values to the research of energy transmission of the fiber probe.