Latest development of study and application on super-luminescent diode(SLD)were reviewed. The effect of the structures included active area,rear absorption area as well as antireflection film of light emitting facet on the spectral characteristics were analyzed.
In weaker absorption region which is related togap states,the distribution of gap state is far from the equilibrium Fermi level,according to Mott-Davis approximation and Gauss distribution assuming for gap sta-te density.
The transmittance spectra and the reflection spectra are measured with a Cary 5000 double beam spectrometer from 200 to 1200nm,and both the absorption coefficient and the extinction coefficient as well as the refractive index are discussed in the intrinsic absorption region.
In this paper, the delayed optoelectronic feedback is introduced to the absorption region in order to control the bistability and self-pulsation characteristics of the two-segment bistable laser diode (TBLD).
A Parameter-the average volume absorption efficiency is developed in this paper for design of the spray absorber of flue gas desulrurization. The parameter can be used for volume designing control index and for calculating the height of absorbing region.
The rare earth/polymer composite could make up the feeble absorbing area in the application of X ray shield and could demonstrate strong hot neutron absorbing ability when the rare earth content was high enough. The composites also had strong paramagnetism.
The effects of the arbuscular mycorrhizal (AM) fungus Glomus mosseae on plant growth, leaf solutes and root absorption area of trifoliate orange (Poncirus trifoliata (L.) Raf.) seedlings were studied in potted culture under water stress conditions.
AM inoculation also promoted the active and total absorption area of root system and absorption of phosphorus from the rhizosphere, enhanced the content of soluble sugar in leaves and roots, and reduced proline content in leaves.
The mechanism of AM fungi in enhancing drought resistance of host plants ascribed to greater osmotic adjustment and greater absorption area of root system by AM colonization.
The Debye temperatures were obtained from a nonlinear optimization algorithm using the temperature dependence of the second order Doppler shift (SOD) and the resonant absorption area (RAA).
Pretreatment endobronchial ultrasonography revealed subepithelial thickening in the right main stem bronchus, with a low absorption area suggestive of edema.
Parameters of absorption bands of Chl a indicate that seven molecules represent a united cluster (heptamer) with exciton interactions, determining the spectrum of LhcIIb in the Chl a absorption region.
An external electric field effect was found on the light transmittance of films within the dye absorption region, which indicated sensitization of the electrooptical effect.
Irradiation at a wavelength corresponding to the absorption region of the N-acyl enaminoketone isomer leads to N→O acyl group transfer to afford O-acylated isomer.
It is shown that annealing and electron irradiation significantly decrease the optical absorption coefficient in the impurity absorption region.
Energy is transferred from the absorption region to the surrounding layer of porous material at up to 2×107 cm/s.