Theoretical study of pump absorption of colinear side-pumping coupler with pumping and absorption loops
The results of a theoretical study of pump absorption properties in the colinear side-pumping schemes with pumping loops and absorption loops are presented. For side-pumping schemes with pumping loops, the number of pumping loops affects the pump absorption obviously: the more pumping loops, the higher pump absorption; and the pump light is absorbed effectively after propagating through all the loops. For side-pumping schemes with absorption loops, more loops results in a larger doped region, which leads to higher pump absorption efficiency.
With the development of colleges and universities in China, liquid waste containing heavy metals was gradually increased,and how to effectively deal with such liquid waste become an important issue faced by the development of university laboratory. In this paper, on the view of industrial waster treatment by microbial adsorption, effects of cofactors including multiple ions, mixed bacterial,adsorption media, and so on on microbial adsorption were summarized. Adsorption mechanism and impact conditions were simply introduced. At last, the prospects of microbial adsorption were discussed.