《化学物理学报》被美国ISI出版物收录

《化学物理学报》编辑部近日接到美国科学信息研究所 (ＩｎｓｔｉｔｕｔｅｆｏｒＳｃｉｅｎｔｉｆｉｃＩｎｆｏｒｍａｔｉｏｎ ,ＩＳＩ)物理、化学、地球科学编辑ＲｏｄｎｅｙＣｈｏｎｋａ先生来信 ,告知《化学物理学报》已入选ＩＳＩ的期刊源 ,并从 2 0 0 2年第 1期起被ＩＳＩ的《ＳｃｉｅｎｃｅＣｉｔａｔｉｏｎＩｎｄｅｘ Ｅｐａｎｄｅｄ(ＳＣＩＥ) ,ＩｎｃｌｕｄｉｎｇｔｈｅＷｅｂｏｆＳｃｉｅｎｃｅ(ＷｏＳ)》 ,《ＣｈｅｍｉｃａｌＣｉｔａｔｉｏｎＩｎｄｅｘ(ＣＣＩ)》 ,《ＲｅｓｅａｒｃｈＡｌｅｒｔ》收录 .Ｃｈｏｎｋａ先生的来信…     

“声与振动”会议

“声与振动”会议第四届国际“声与振动”会议将于１９９６年６月２４日一２７日在俄罗斯圣彼得堡举行。欲参加会议者请于１９９５年１２月３１日前，将论文英文摘要寄至：ＭａｌｃｏｌｍＪ．Ｃｒｏｃｋｅｒ，ＳｅｃｒｅｔａｒｉａｔＦｏｕｒｔｈＩｎｔｅｒｎａｔｉｏｎａ...     

Instructions to Authors

“ＢＯＰＵＸＵＥＺＡＺＨＩ”(ＣｈｉｎｅｓｅＪｏｕｒｎａｌｏｆＭａｇｎｅｔｉｃＲｅｓｏｎａｎｃｅ)ｉｓａｎａｔｕｒａｌｓｃｉｅｎｃｅｓｃｉｅｎｔｉｆｉｃｐｕｂｌｉｃａｔｉｏｎｓｐｏｎｓｏｒｅｄｂｙＣｏｍｍｉｔｔｅｅｏｆＭａｇｎｅｔｉｃＲｅｓｏｎａｎｃｅｏｆＴｈｅＣｈｉｎｅｓｅＰｈｙｓｉｃｓＳｏｃｉｅｔｙａｎｄＷｕｈａｎＩｎｓｔｉｔｕｔｅｏｆＰｈｙｓｉｃｓａｎｄＭａｔｈｅｍａｔｉｃｓ,ＴｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ.Ｉｔａｐｐｅａｒｅｄｉｎ1 983ａｎｄｉｓｃｈａｎｇｅｄｔｏｑｕ…     

正确使用SCI数据库

在科学界 ,无论是发达国家还是发展中国家 ,研究工作者往往被鼓励在ＳＣＩ(ＳｃｉｅｎｃｅＣｉｔａｔｉｏｎＩｎｄｅｘ)影响因子 (ｉｍｐａｃｔｆａｃｔｏｒ ,以下简称ＩＦ)高的学术期刊上发表论文 .按照编纂ＳＣＩ数据库的费城科学信息研究所 (ＩＳＩ)的计算方法 ,所谓期刊的ＩＦ ,它代表的是 ,一种期刊所发表的论文被全世界 5 70 0种期刊引用的平均次数 .例如 ,Ｎａｔｕｒｅ和Ｓｃｉｅｎｃｅ的ＩＦ约为 2 5 ,Ｐｈｙｓ .Ｒｅｖ .Ｌｅｔｔ.和Ｐｈｙｓ .Ｒｅｖ .Ｂ的ＩＦ约为 6 5和 2 8.在一定意义上 ,ＩＦ客观地反映了某种期刊在其所属学…     

Bell实验室对重要研究成果的质疑进行调查

近两年来 ,美国Ｂｅｌｌ实验室Ｊ .Ｈ .Ｓｃｈ ｎ(第一作者 )等人用场效应三极管 (ＦＥＴ)技术对材料作载流子掺杂 ,在Ｓｃｉｅｎｃｅ和Ｎａｔｕｒｅ等杂志上发表了多篇重要研究成果 ,例如在有机晶体三并苯、四并苯和五并苯中观察到超导电性的出现 ;对Ｃ60 晶体作空穴掺杂 ,得到比用化学方法作电子掺杂更高的超导转变温度 (5 2Ｋ) ,对在Ｃ60 晶体间隙位置插入其他分子 (如ＣＨＢｒ3 )的样品得到更高的超导转变温度 (117Ｋ)等 .这些漂亮的实验结果引起国际物理学界广泛的重视和关注 ,《物理》亦有所报道 ,分别刊载于 2 0 0 1年第 3期 189页、…     

第24届国际激波学术会议会讯

国际激波学术会议 (ＩｎｔｅｒｎａｔｉｏｎａｌＳｙｍｐｏｓｉｕｍｏｎＳｈｏｃｋＷａｖｅｓ ,简称ＩＳＳＷ )是国际上激波研究领域的重要系列学术会议。自 195 7年第一届会议在Ｂｏｓｔｏｎ召开以来 ,每隔两年召开一次 ,迄今共计举办了 2 3次。美国、德国、加拿大、澳大利亚、英国、日本、以色列、法国等到国家的著名大学和研究机构等都先后主持和承办了国际激波学术会议。该会议对交流激波研究的最新进展、激励和推动在工程、物理和化学科学以及生物和医学应用等相关领域的基础研究都起到了重要作用。第 2 4届国际激波学术会议 (ＩＳＳＷ…     

The Effect of SRS on Signal Power in Single mode Silica Fiber in DWDM Optical Communication System with Equally Spaced Channels

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　ＳｔｉｍｕｌａｔｅｄＲａｍａｎｓｃａｔｔｅｒｉｎｇ(ＳＲＳ)ｉｓａｎｉｍｐｏｒｔａｎｔｎｏｎｌｉｎｅａｒｐｒｏｃｅｓｓ.ＷｉｔｈｔｈｅａｉｄｏｆｔｈｅＳＲＳ,ｗｅｃａｎｔｕｒｎｏｐｔｉｃａｌｆｉｂｅｒｓｉｎｔｏｂｒｏａｄｂ?..     

甲醇溶液中苯基硫脲吸附在薄层铁电极上的表面拉曼光谱研究

甲醇溶液中苯基硫脲吸附在薄层铁电极上的表面拉曼光谱研究顾仁敖邓正发姚建林曹佩根胡培荣（苏州大学化学化工学院苏州２１５００６）ＳｕｒｆａｃｅＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｉｃＳｔｕｄｉｅｓｏｆＰｈｅｎｙｌ┐ｔｈｉｏｕｒｅａｏｎＦｅＥｌｅｃｔｒｏｄｅ...     

表面增强Raman散射活性体系的结构设计

自从表面增强Ｒａｍａｎ散射（ＳｕｒｆａｃｅＥｎｈａｎｃｅｄＲａｍａｎＳｃａｔｅｒｉｎｇ，ＳＥＲＳ）现象发现以来，关于ＳＥＲＳ产生的机制人们已做了大量的研究，提出了一系列的模型。这些模型主要分为两类：电磁增强和化学增强。电磁增强机理认为［１，２］，当电...     

SERS技术在金属固体表面上人工双分子层膜(BLM)基的生物和化学传感器研究中的应用

ＳＥＲＳ技术在金属固体表面上人工双分子层膜（ＢＬＭ）基的生物和化学传感器研究中的应用方炎胡凤霞林书煌（首都师范大学综合技术研究所北京１０００３７）ＴｈｅＡｐｐｌｉｃａｔｉｏｎｏｆＳｕｒｆａｃｅ┐ＥｎｈａｎｃｅｄＲａｍａｎＳｃａｔｅｒｉｎｇ（ＳＥＲＳ）...     

基于旋转相干光谱的整形飞秒激光转动动力学调控

我们实验上发展了基于飞秒激光旋转相干光谱的整形飞秒激光转动动力学调控方法，通过脉冲整形技术调控激发脉冲的光谱相位，从而实现对飞秒激光作用下转动态相干激发过程中复原信号及转动布居数的调控. 研究了飞秒激光旋转相干光谱对激光频谱相位的响应机制，突出了飞秒激光频谱相位在气相分子转动态相干激发中的重要作用. 为飞秒激光作用下生物大分子和团簇鉴别及结构探测研究提供了新的参考.     

飞秒激光脉冲整形技术及其应用

通过频域上控制飞秒激光脉冲幅度、相位和偏振在时域上可以获得几乎任意形状的飞秒激光脉冲,这种飞秒激光脉冲整形技术可为研究光与原子分子非线性相互作用提供一种全新实验技术手段.本文介绍飞秒激光脉冲整形发展历史、技术方法、控制方式及其相关应用,并展望飞秒激光脉冲整形技术未来的发展方向.     

Requirement of optical coherence for continuous-variable quantum teleportation

We show that the sender and the receiver each require coherent devices in order to achieve unconditional continuous variable quantum teleportation (CVQT), and this requirement cannot be achieved with conventional laser sources, linear optics, ideal photon detectors, and perfect Fock state sources. The appearance of successful CVQT in recent experiments is due to interpreting the measurement record fallaciously in terms of one preferred ensemble (or decomposition) of the correct density matrix describing the state. Our analysis is unrelated to technical problems such as laser phase drift or finite squeezing bandwidth.     

Probe of high-order harmonic generation in a hollow waveguide geometry using counterpropagating light

We use counterpropagating light to directly observe the coherent buildup of high harmonic generation in a hollow waveguide geometry. We measure, for the first time, coherence lengths for high photon energies that cannot be phase matched using conventional approaches. We also probe the transition through phase matching, the ionization level at which different harmonic orders are generated, and the change in the coherence length as the driving laser is depleted. These results directly prescribe the optimal structures or pulse trains required for implementing quasiphase matching.     

Quantum non-demolition measurement of photon number using weak nonlinearities

We propose an alternative method for the quantum non-demolition measurement of photon numbers wherein weak cross-Kerr nonlinearities are to be used. The usual approach to quantum non-demolition measurements of quantum number involves encoding the photon number, through a cross-Kerr interaction, into a phase shift of a probe coherent state which is then detected through balanced homodyning. Weak nonlinearities produce small phase shifts which are difficult to detect and distinguish. In the method we propose, unbalanced homodyning acts as a displacement operator on the probe beam coherent state such that the cross-Kerr interaction encodes the photon number into the amplitude of a new coherent state. The value of the photon number can be determined by inefficient photon counting on the new coherent state. Our proposed method requires fewer resources than does the usual approach.     

Theory of coherent luminescence of inverted systems

A study of a system of N two-level molecules excited by a series of resonant laser pulses is made. Upon inversion such a system may give rise to coherent photon avalanches. If the system is irradiated with a subsequent pulse one should observe “light echoes” whose intensity is proportional to the square of the density of dipole moments of the system.     

拉盖尔多项式算符激发相干态的非经典性质

将拉盖尔多项式算符作用在相干态上,构造了拉盖尔多项式算符激发相干态.利用有序算符积分技术,导出了它的归一化系数以及〈a^la^+m〉的计算表达式.采用数值计算方法,讨论了相干态相位角和平均光子数对它的非经典性质的影响.研究结果表明:一阶拉盖尔多项式算符激发相干态呈现出压缩效应、反聚束效应、亚泊松分布和Wigner函数负性等量子特性,并且相干态的相位角对它的量子特性有重要影响;另一方面,随相干态平均光子数增大,它的反聚束效应和亚泊松分布性质逐渐减弱,压缩效应和Wigner函数的负性却先增强,而后又逐渐减弱.     

Experimental investigation of a seven-element hexagonal fiber coherent array

The phase noises of a 10-m polarization-maintaining （PM） fiber and a 10-W PM fiber amplifier are experimentally measured. The results indicate that the 10-m PM fiber with similar phase noise could be used to investigate the architecture of master oscillator power amplifier coherent combination. A seven-element hexagonal fiber coherent array is developed to investigate the far-field distribution and phase controlling technique of a coherently combining fiber laser array. A hexagonal prism is designed as the combining and splitting component to achieve a fill factor of 0.66. The hill climbing method is employed to detect and lock the element phase.     

Photon correlations in a multiple coherent and overlapping chaotic radiation field

We propose a study of the second-order coherence properties of radiation, such as inelastically scattered laser light, by performing an excess photon coincidence rate experiment a la Hanbury Brown-Twiss. The calculation evaluates the second-order correlation function of the electromagnetic field for an arbitrary number of coherent modes overlapped in phase space by a chaotic radiation field. We discuss the application of the general result to a specific case, namely the case of a single mode laser, and the Stokes radiation produced in a Brillouin-active medium, and a suitable part of the spectrum produced by causing dielectric breakdown in air.     

Transferring and Bounding Single Photon in Waveguide Controlled by Quantum Node Based on Atomic Ensemble

We study the scattering process of photons confined in a one-dimensional optical waveguide by a laser controlled atomic ensemble. The investigation leads to an alternative setup of quantum node controlling the coherent transfer of single photon in such one dimensional continuum. To exactly solve the effective scattering equations by using the discrete coordinate approach, we simulate the linear waveguide as a coupled resonator array at the high energy limit. We generally calculate the transmission coefficients and itsvanishing at resonace reflects the good controllability of our scheme. We also show that there exist two bound states to describe the localize photons around the cavity.