ELECTRON-OPTICAL PHONON SCATTERING

In this book chapter, we study the nonlinear absorption of a strong electromagnetic wave in low dimensional systems (quantum wells, doped superlattices, cylindrical quantum wires and rectangular quantum wires) by using the quantum kinetic equation method. Starting from the kinetic equation f[r]

A petrographic microscope is used to observe a series of characteristics in a mineral which reflect its properties and allow us to identify it.
The petrographic microscope is a compound microscope which can work with plane polarised light, meaning that it has some peculiarities.
This is always done[r]

effects of electrical and thermal parasitics in cross-planetransport measurements, thereby allowing interpretation ofmeasurements of thermionic transport, barrier height, and lat-tice thermal conductivity. These high resistivity superlatticesused for the prior investigation were grown at a low oxyge[r]

High efficiency excitation of plasmonic waveguides with vertically integrated resonant bowtie apertures Edward C. Kinzel, Xianfan Xu* School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA *xxu@ecn.purdue.edu Abstract: In recent years, many[r]

An approach towards a singlemode local loop is presented in which each customer is given a dedicated wavelength channel by taking different wavelength slices from identical LEDs. This is accomplished by means of wavelength division multiplexing (WDM) components. Results from a fourchannel system ope[r]

... 3021 23 Chapter Graphene Oxide Induced Aggregation of Thiophene-Acrylonitrile-Carbazole Oligomer and Their Nonlinear Optical Limiting Properties 3.1 Introduction Nonlinear Optical limiting (NLO)... rational modification of both the electronic structure and conductivity of graphene sheets accompa[r]

23IntroductionPolarized light and its applications appear in many branches of science and engineering. These include astrophysics (synchrotron radiation, solar physics, atmosphericscattering), chemistry (saccharimetry, optical activity, fluorescence polarization),microscopy (the polarizing mic[r]

chữ nhật với hố thế cao vô hạn, trường hợp tán xạ điện tử - phonon quang,Luận văn Thạc sĩ khoa học, trường Đại học Khoa học Tự nhiên – ĐHQGHN.Tài liệu tiếng Anh14. A. F. Khokhlov, I. A. Chuchmai, and A. V. Ershov (2000), “AbsorptionFeatures in a- Si/ZnOx Nanostructures”, Semiconductors 34 (3)[r]

In SL, along the growth direction, phonon branches inthe first Brillouin zone are folded. This folding produces twoconsequences: first, minibands and hence anticrossings areformed at the center and edge of the SL Brillouin zone. Sec-ond, the phonon dispersion curves are flattened, which l[r]

dò tìm cộng hưởng electron-phonon bằng quang học trong dây lượng tử với thế giam giữ dạng bán parabol

LUẬN VĂN THẠC SĨ KHOA HỌCNgƣời hƣớng dẫn khoa học: GS.TS NGUYỄN QUANG BÁUHà Nội – 2015MỞ ĐẦU1. Lý do chọn đề tàiNhững năm gần đây, cùng với sự phát triển mạnh mẽ của công nghệ vật liệumới, các nhà khoa học đã tìm ra nhiều phương pháp tạo ra các cấu trúc nano khácnhau, trong đó có bán dẫn thấp chiều[r]

situation is quite different. The world today is faced with many major threats. The most dangerous threat of all is war,and after the threat of war is pollution. People all over the world are worried about things that are happening to theenvironment. Actually it is man that is destroying the surroun[r]

điện tử ba chiều không có.Ta biết rằng ở bán dẫn khối, các điện tử có thể chuyển động trong toàn mạng tinhthể (cấu trúc 3 chiều) thì ở các hệ thấp chiều bao gồm cấu trúc hai chiều,chuyển động1của điện tử sẽ bị giới hạn nghiêm ngặt dọc theo một (hoặc hai,ba) hướng tọa độ nào đó.Phổ năng lượng của các[r]

nào tùy thuộc vào lo i khuiquang hay nói cách khác ph thuộc vào c u t o c a vùng tích c c. Tùy theo c u t oc a vùng tích c c, có th chia khui quang thành hai lo i chính:Khuếch đại quang bán dẫn SOA (Optical Semiconductor Amplifier):- Vùng tích cc c u t o b ng v t li u bán dẫn.- C u trúc c a v[r]

... coefficient of the trapped LiK molecules in the 2D dynamics of the optical lattice The loss rate due to the reaction is the product of this rate coefficient and the 2D density of the trapped... and the optical lattice, we obtain: 2 ωz,ol lc,g = = lc,ol ωz,g 8U0 m 2 2U0 mzR = 4π zR 4π w 02 = λ 2[r]

.. .Analysis and Computation for Coupling Bose- Einstein Condensates in Optical Resonators Xu Wei Biao (B.Sc Sun Yat-Sen University of China) A THESIS SUBMITTED FOR THE DEGREE OF... Summary Since 1995, Bose- Einstein condensates (BEC) of alkali atoms have been produced and studied extensively in exp[r]

... ease of modifying the potential landscape In fact, the optical potential is formed by the interaction between a laser and the cold gas, and the potential can be tuned by adjusting the shape of the. .. and the optical trap [Ashkin et al., 19 86] The optical trap is normally used at the later stag[r]