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中国科学院新疆理化技术研究所在非线光学响应机理取得突破进展---低能轨道非中心分布机理（Low-energy orbital non-centrosymmetric distribution, LOND）（图）
非线光学 响应机理 低能轨道 非中心分布
2021/3/1
非线性光学因为它的高阶物理过程而独具魅力，在固体激光，物质探测，光子通信，量子纠缠，量子隐形传输等领域都有广泛应用。1961年科学家们在石英晶体中观测到了激光的二阶非线性过程。随后，非线性光学迎来了飞跃的发展。在非线性光学微观机理研究方面，从化学键、原子尺度上发展了许多理论模型和近似的方法，包括非谐振子模型、双能级模型、键电荷模型、键参数模型、电荷转移理论等，为非线性光学材料的内在机理和设计合成方...
MARKER-FREE REGISTRATION OF TERRESTRIAL LASER SCANS USING THE NORMAL DISTRIBUTION TRANSFORM
LIDAR Laser scanning Terrestrial Registration Matching
2015/8/7
The registration of scan data often uses special markers which are placed in the scene. This leads to a reliable registration
but the method is not very efficient. Therefore, we search for a re...
Abstract: When a beam of light is reflected by a smooth surface its behavior deviates from geometrical optics predictions. Such deviations are quantified by the so-called spatial and angular Goos-Haen...
The nucleon's transversity and the photon's distribution amplitude probed in lepton pair photoproduction
The nucleon's transversity photon's distribution amplitude lepton pair photoproduction
2011/1/7
We describe a new way to access the chiral odd transversity parton distribution in the proton
through the photoproduction of lepton pairs on transversely polarized target. The basic ingredient is the...
nse-Coding Attack on Three-Party Quantum Key Distribution Protocols
nse-Coding Attack Three-Party Quantum Key Distribution Protocols
2010/10/19
Cryptanalysis is an important branch in the study of cryptography, including both the classical cryptography and the quantum one. In this paper we analyze the security of two three-party quantum key d...
100 MHz Amplitude and Polarization Modulated Optical Source for Free-Space Quantum Key Distribution at 850 nm
100 MHz Amplitude Polarization Modulated Optical Source Free-Space Quantum Key Distribution 850 nm
2010/10/19
We report on an integrated photonic transmitter of up to 100 MHz repetition rate, which emits pulses centered at 850 nm with arbitrary am-plitude and polarization. The source is suitable for free spac...
Measurement of Distribution of Blood-flow Change in Exposed Cortex by Laser Speckle Flowgraphy
Laser Speckle Blood flow Imaging
2009/6/2
The change in the cortical blood flow of guinea pigs during auditory stimulation is measured by laser speckle flowgraphy (LSFG). Accuracy of LSFG depends on the number of the frames for the blood flow...
The Diagnostics of Density Distribution for Dense Hot DT Plasmas Using Fast Protons
Density reconstruction Dense DT plasmas High temperature
2009/6/1
The density reconstruction for dense DT plasmas with high temperature has been studied. In the simulation of a plasma density diagnostics, the energy loss of fast protons going through the plasmas is ...
Quantum cryptography was introduced in the mid-1980s [1] as a new method for generating the shared, secret random number sequences, known as cryptographic keys, that are used in crypto-systems to prov...
Determination of Defect Distribution in a Ga-rich ZnO/CdS/Cu(In,Ga)Se2 Solar Cell by Admittance Spectroscopy
CIGS solar cell admittance spectroscopy defect distribution
2010/4/12
This article presents a study on the energy distribution of defects in efficient thin film ZnO/CdS/Cu(In,Ga)Se2 heterojunction solar cell by the use of admittance spectroscopy. The capacitance spectra...
Transfer of Photometric Quantities at Arbitrary Distribution Temperatures
Bureau International Des Poids Et Measures National Institute of Metrology photometric quantities
2010/4/19
Characteristics of a photometric setup used for the measurement of photometric quantities at the National Institute of Metrology (UME) in Turkey are reported. A high accuracy method is developed to ad...