http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Optical Properties of a Nanofiber with Metal Cladding
Guoying Feng,Hao Zhou,Guorui Zhou,Hao Yang,Guoliang Deng,Shouhuan Zhou 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.58 No.41
We present a detailed report on the linear and the nonlinear optical properties of a nanofiber with metal cladding fabricated by using a flame stretch method and a vacuum deposition method. We numerically simulated the field distribution in a tapered nanofiber with different thicknesses of silver cladding. The results show that, due to the high-index contrast between the silica core and the silver cladding, the silica waveguide allows strong optical confinement and large effective nonlinearity. The supercontinuum generation based on a nanofiber with metal cladding is investigated theoretically and experimentally.
First-principles analysis of the absorption and luminescence properties of Cr2+-doped ZnSe crystal
Yuqin Zhang,Guoying Feng,Shenyu Dai,Shougui Ning,Shouhuan Zhou 한국물리학회 2016 Current Applied Physics Vol.16 No.5
The electronic band structure, absorption and luminescence properties of Cr2+-doped ZnSe crystal have been investigated by first-principles calculations on the basis of density functional theory. Firstprinciples calculations were carried out using the Vienna Ab-initio Simulation Package (VASP). It is shown that isolated impurity bands that mainly made up of Cr(d) orbitals are created in the band gap with the doping of Cr2+ ions. The Cr(d) orbitals are split into e and t2 groups because of the potential of the crystal. Theoretical absorption and luminescence spectra are calculated and compared with experimental data. An appropriate explanation of the experimental spectra is presented.