supported by the National Natural Science Foundation of China (60678005);the Basic Research Project of Shaanxi Provincal Natural Science Foundation (2006F39)
A copper-doped silica composite aerogel with high specific surface area was prepared using a sol-gel method at ambient pressure. A drying control chemical additive (DCCA) N,N-dimethylformamide (DMF) was introduced to ...
supported by the National Natural Science Foundation of China(No.60678005);the Foundation for Key Programs of the Ministry of Education, China(No.105156);the Specialized Research Fund for Doctoral Program of Higher Education of China(No. 2050698017);the Program of School Management of Xi'an Polytechnic University in Xi'an(No.09XG25)
We propose a scheme for the enhancement of nonlinear susceptibility in a four-level tripod-type atomic system in the presence of a microwave field. With a microwave field, nonlinear susceptibility can be enhanced. Non...