共查询到20条相似文献，搜索用时 15 毫秒
1.
ZHOU Nan-run GONG Li-hua LIU Ye 《光电子．激光》2006,2(6):455-458
In quantum communication,a quantum channel be-tween communicators is more i mportant than the tradi-tional classical channels .Quantumchannel can be quan-tumentanglement between/among communicators .Forexample,for a two-party correspondence,the quantumcha… 相似文献
2.
LI Xia XUE Wei JIANG Yu-rong 《光电子快报》2006,2(5):361-363
Many novel devices based on photonic crystals (PCs)have been reported,such as micro-laser with high Q,waveguide with lowloss ,omnidirectional reflector ,andsuper narrow band filter[1]. Since Yablonovitch′sgroup[2]fabricated a three di mensional photonic … 相似文献
3.
WANG Wen-jun LI Shu-hong HU Hai-quan BAI Cheng-lin 《光电子快报》2006,2(4):284-287
Langmuir-Blodgett(LB)fil ms have been receivingconsiderable attention due to the scientific and techno-logical significance[1-2].For a given type of moleculeswith specific functions,the macroscopic physical andchemical properties of LBfil ms are determine… 相似文献
4.
JIN Hai-lan CUI yuan-shun 《光电子快报》2006,2(5):392-395
With the development in nanotechnology,the quan-tum devices in mesoscopic size can be manufactured,such as Josephson junction device,molecule switch de-vice,super-lattice device,superconducting quantumin-terference device and etc .These mesoscopic devices… 相似文献
5.
Mn-doped ZnO diluted magnetic semiconductor nanoparticles are prepared by an ultrasonic assisted solgel process. Transmission electron microscopy shows pseudo-hexagonal nanoparticles with an average size of about 24 nm. From the analysis of X-ray diffraction,the Mn-doped ZnO nanoparticles are identified to be a wurtzite structure without any impurity phases. The magnetic properties are measured by using superconducting quantum interference device. For the ZnO with 2 % Mn doping concentration, a good hysteresis loop indicates fine ferromagnetism with a Curie temperature higher than 350 K. 相似文献
6.
CHEN Xian-feng SHEN Xiao-ming JIANG Mei-ping SHI Du-fang 《光电子快报》2005,1(3):198-200
The band gap properties of one-dimensional photonic crystals with a defect layer of negative refractive index materials are studied. The defect mode width is bigger than that of conventional one-dimensional photonic crystals with a defect layer of positive refractive index materials. The defect mode of the former is different from that of the latter, shifts towards the direction of high frequency （short wavelength）, and has a bigger shifting velocity. Furthermore the effects on the transmission properties of the former photonic crystals caused by change in the position of the defect layer of negative refractive index are investigated. Finally the optical enhancement of the former photonic crystals is also investigated. 相似文献
7.
LUO Bin LI Jun HE Sai-ling 《光电子快报》2005,1(1):75-77
Multipledynamiclightscattering(MDLS),whichis alsocalleddiffusing wavespectroscopytheory,canbe usedtoinvestigatethedynamicsofthescattersinatur bidmedium[1 3].Usingacoherentlaserbeamtoillumi nateaturbidmedium,aspecklepattern(aninterfero gramofthemultiplyscatteredlight)canbeobservedonthesurfaceofthemedium.Motionoftheinternalscat ters(duetoe.g.neuralactivitiesinahumanbrain)will resultinspecklefluctuationwhoseratereflectsthedy namicpropertyofthemedium.Theoretically,abasicquantityinMDLSisthef… 相似文献
8.
LU Yang ZHANG Bai-gang XU De-gang DING Xin WANG Peng ZHANG Tie-li JI Feng YAO Jian-quan 《光电子快报》2005,1(1):10-12
We report on a high power output quasi-continuous-wave nanosecond optical parametric generator （OPG） of congruent periodically poled lithium niobate （PPLN） pumped by a 1 064 nm acousto-optically Q-switched Nd-YVO4 laser （duration. 70 ns,repetition rate：45 kHz,spatial beam quality M2〈 1,3）. The OPG consists of a 38.7 mm long PPLN crystal with a domain period of 28.93 μm. With 5.43 W of average pump power the maximum average output power is 991 mW at 1 517.1 nm signal wave of the PPLN OPG. 相似文献
9.
SHEN Jian LI Ai-wu ZHENG Jie ZHANG Le-tian LIU Guo-fan ZHENG Wei ZHANG Yu-shu 《光电子快报》2005,1(2):121-123
In this paper, silica-on-silicon erbium-doped phosphosilicate glass film material was fabricated for optical waveguides by sol-gel method. Samples were characterized and analyzed. It is demonstrated that we have got well-distributed, good translucent, alterable thickness of film and glass state erbiumdoped phosphosilicate films material for optical waveguides by sol-gel method. 相似文献
10.
JIANG Mei-ping CHEN Guang SHEN Xiao-ming GHEN Xian-feng NI Chong-wen SHI Du-fang 《光电子快报》2006,2(1):78-81
It is desiredthat the photon mode could be controlledby using photonic crystal ,such as threshold-less laserdevices[1].The key problemin fabricating photonic de-vices is howtointroduce a defect state[2]into a photoniccrystal ,nevertheless it is difficult … 相似文献
11.
TANG Kang-song XIANG Yuan-jiang WEN Shuang-chun 《光电子快报》2006,2(2):118-121
Photoniccrystal(PC)[1,2]isanartificiallyfabricated structurewhosestructureperiodhasthesameorderin magnitudeasthewavelengthoftheincidentelectromag neticwave.TheessentialpropertyofPCisthephotonic bandgaporiginatedfromtheconsequenceofBraggscat tering.SuchaBr… 相似文献
12.
JI .Ren-dong KONG Xiang-he LIU Xian-yun ZHANG Shu-dong 《光电子快报》2006,2(5):399-402
Ion mobility spectrometry (I MS) is based upon theseparation of gas phaseionsthroughsize-to-charge rath-er than mass-to-chargeratios[1].Morerecentlythe appli-cationsinindustry and environment have increased,notonly because of the si mplicity of theinstrum… 相似文献
13.
CHEN Li-jiang LIU Tie-gen CHEN Jia-Jia ZHU Jun-chao DENG Ji-Jie MA She-xiang 《光电子快报》2006,2(2):155-157
Aslegalconfirmationofbankcheck,sealimprintsare usedinOrientalcountries.Manymethodsonautomatic sealimprintverificationbyacomputerhavebeenan nounced[14],ofwhich,however,mostcannotbeapplied directly,becausetheydealwiththoseoftheimagesof onlyasealimprintother… 相似文献
14.
LI Geng-wei YANG Shao-yan LIU Zhi-kai ZHENG Zhi-yuan 《光电子快报》2006,2(4):282-283
The GaNis a semiconductor material witha widefor-bidden band(Eg=3.36eV).It has many unique advan-tages such as high electron drift velocity,small dielectricconstant,goodthermal conduction et al.It is a favorablematerial for making electric devices with hi… 相似文献
15.
CHEN Da LI Qing-shan WANG Jing-jing ZHENG Xue-gang 《光电子快报》2006,2(3):182-185
With their unique properties such as high hardness ,lowfriction,chemical inertness and optical transparency,Diamond-like carbon(DLC) fil ms are usedina wide ar-ea of industrial applications ,as a protective coating insuch areas as optical windows ,magneti… 相似文献
16.
CHENG Yong-shan GONG Rong-zhou LI Hong 《光电子快报》2006,2(3):233-236
The statics characteristics of two coupled Bose-Einstein condensate （BEC） dark solitons trapped in an optical lattice are investigated with the variational approach. It is found that the interaction between a ‘kink＇ and an ‘anti-kink＇ with opposite phase gradients is effectively repulsive, and the optical lattice can be controllably used to produce a pair of static BEC dark solitons. Its effect depends on the initial location of the BEC dark solitons, the lattice amplitude and wave number. 相似文献
17.
JIANG Meng ZHANG Wei-gang TU Qin-chang LIU Hai-tao ZHANG Qi 《光电子快报》2006,2(6):419-421
Many researches have been done on the optical char-acteristics of the FBG whenexternal fields are appliedtoit .For example,the studies on the reflection spectra ofthe FBGin uniformstrain field[1],temperature field[2],strain and temperature cross-sensitive… 相似文献
18.
Nowadays digital holography (DH) is applied to thethree di mensional surface contouring,duetoits non-con-tact advantage[1-5].Moreover ,when a lensless Fouriertransform arrangement with the short-coherence lightsourceis employed in a DHrecording system,not… 相似文献
19.
Ti me of flight mass spectrometer(TOF-MS) is verysuccessful apparatus to detect clusterions[1-3].It isknown protonatedions are easy to formedin multipho-tonionization( MPI)[4 ,5].Acetoneis the si mplest molecule in the ketones ,it isvery popularinvestigat… 相似文献
20.
LU Xiao-dong HAN Pei-de QUAN Yu-jun YE Zhi-cheng DOU Jin-feng WU Li ZHAO Chun-hua 《光电子快报》2005,1(3):194-197
In this paper, the effects of shapes and orientations of rods on absolute PBGs in 2D square lattice are studied. By replacing round rods with square rods, which sides are along with the direction of elementary lattices vectors, the absolute PBGs in 2D square lattice with wave vector in periodic plane and off periodic plane have been studied and then through changing the square rods orientation, the changing of the width and position of PBG has been obtained. 相似文献