band to band transition
1.We found the maximum phase conjugate reflectivity Rc=5% and the saturation intensity Is=16×106W/cm2.The value 3.7×10-9esu of the third-order nonlinear susceptibility x(3) derived from the measurements was agreed with the theory of James and Smith for x(3) which is due to intervalence band transition.
2.It was indicated that the reflectance of ITO film in IRregion shows strong dependence on film square resistance. The electromagnet constitutive characteristics,n and k, show slight dispersion at the wavelength range of 450 -800 nm. Linear simulation on absorptancenear optical absorption edge of the film indicates that the transition from valance band to conduction bandat K=0 is a forbidden transition.
3.Act as the core of future B - ISDN switch, ATM contains the advantage of large capacity, integration and flexible bandwidth utilization, therefore, voice on ATM(VOA) technology becomes one of effective solutions for transition from narrow band to future broadband integrated network.
4.The emission spectra of Ce??3+? ion in garnets consist of a broad band assingning to the ?5d?4f? transition of Ce??3+? ion.
5.A broadband millimeter wave omnidirectional asymmetrical biconical horn antenna was investigated. A ridge waveguide coax line transition structure was designed to solve the feed problem of biconical horn antenna in millimeter wave band and to meet the engineering requirement that the input port of antenna must be a waveguide. The measurement data of omni directivity and input VSWR in the 26 40GHz band show good agreement with the design.
6.The generation of diffuse band stimulated radiaton corresponding to the 2~3∏_g-a~3∑_u~+ transition in Li_2
7.The broad emission band extending from 430 to near 670 nm results from the transition of the lowest 5d level to 2FJ (J=5/2, 7/2) terminal state.
8.Excitation spectra show that there appears a strong absorption band of Ce3+, in addition to the original f-f transition sharp lines of Tb3+ or Dy3+.
9.the other broad band between 500nm and 700nm is ascribed to Mn~(2+) emission corresponding to the ~6A_1→~4T_1(4G) transition.
10.This method can not only minimize the stopband energy of the prototype filter, but also determines the inter symbol interference power and the transition band energy, which can be used to design prototype filters for both the critically sampled FMT system and the non-critically sampled FMT system.
