1+2维轴对称傍轴Sech光束在强非局域介质中的传输特性

1+2-Dimensional Symmetric Paraxial Sech Optical Beam Propagation Properties in Strongly Nonlocal Media

利用变分法研究了1+2维轴对称傍轴Sech光束在强非局域介质中的传输特性,得到了Sech光束各参量的演化规律和一个临界功率.当初始功率等于临界功率时,可以得到一个稳定变分空间光孤子,而一般情形下,束宽则作周期的振荡变化.

By the means of variation method, the 1 ＋ 2 - dimensional symmetric paraxial seeh optical beam properties is investigated in strongly nonlocal media, the parameters evolution law and the critical power is obtained. When the initial power equals the critical power, a stabile variation spatial soliton is obtained, and generally the beam width periodic oscillates variation.