Amplified Spontaneous Emision of K_2 Yellow Band Excimer and Its Gain Measurement by e-beam-pumping

ＡｍｐｌｉｆｉｅｄＳｐｏｎｔａｎｅｏｕｓＥｍｉｓｉｏｎｏｆＫ２ＹｅｌｏｗＢａｎｄＥｘｃｉｍｅｒａｎｄＩｔｓＧａｉｎＭｅａｓｕｒｅｍｅｎｔｂｙｅ┐ｂｅａｍ┐ｐｕｍｐｉｎｇＸＩＮＧＤａ１）ＷＡＮＧＱｉ２）ＴＡＮＳｈｉｃｉ１）（１）Ｉｎｓｔｉｔｕｔｅｏｆ...     

2-(4-异丁基苯基)丙酸的激光拉曼光谱

２┐（４┐异丁基苯基）丙酸的激光拉曼光谱鲍培谛黄天荃刘新民（四川联合大学成都６１００６４）ＲａｍａｎＳｐｅｃｔｒａｏｆ２┐（４┐ｉｓｏｂｕｔｙｌｐｈｅｎｙｌ）ｐｒｏｐｉｏｎｉｃａｃｉｄＢａｏＰｅｉｄｉ，ＨｕａｎｇＴｉａｎｑｕａｎ，ＬｉｕＸｉｎｍｉｎ（...     

Excited-state Optical Storage in azo Dye Doped PVA Film by Four-wave mixing

Ｅｘｃｉｔｅｄ┐ｓｔａｔｅＯｐｔｉｃａｌＳｔｏｒａｇｅｉｎａｚｏＤｙｅＤｏｐｅｄＰＶＡＦｉｌｍｂｙＦｏｕｒ┐ｗａｖｅｍｉｘｉｎｇＢＡＯＸｉｎｘｉａｎＺＨＥＮＧＳｈｕｚｉ１）ＬＩＣｈｕｎｆｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓ，ＨａｒｂｉｎＩｎ...     

Theory and Experiments of Active-Passive Colliding Pulse Mode-Locking in Solid-State Lasers

ＴｈｅｏｒｙａｎｄＥｘｐｅｒｉｍｅｎｔｓｏｆＡｃｔｉｖｅ┐ＰａｓｉｖｅＣｏｌｉｄｉｎｇＰｕｌｓｅＭｏｄｅ┐ＬｏｃｋｉｎｇｉｎＳｏｌｉｄ┐ＳｔａｔｅＬａｓｅｒｓＬＩＫａｎｇＪＩＡＮＧＺｈｕｑｉｎｇ（ＢｅｉｊｉｎｇＬａｂ．ｏｆＬａｓｅｒＴｅｃｈｎｏｌｏｇ...     

One Dimensional Kinetic Study on E-Beam-Excited KrF Laser Including the Vibrational Relaxation

ＯｎｅＤｉｍｅｎｓｉｏｎａｌＫｉｎｅｔｉｃＳｔｕｄｙｏｎＥ┐Ｂｅａｍ┐ＥｘｃｉｔｅｄＫｒＦＬａｓｅｒＩｎｃｌｕｄｉｎｇｔｈｅＶｉｂｒａｔｉｏｎａｌＲｅｌａｘａｔｉｏｎＦＥＮＧＧｕｏｇａｎｇＧＡＯＪｕｎｓｉＳＨＡＮＹｕｓｈｅｎｇ（Ｐ．Ｏ．Ｂｏｘ２７５...     

Study on the Amplitude-squared Squeezing Characteristic of the Binomial-like State

ＳｔｕｄｙｏｎｔｈｅＡｍｐｌｉｔｕｄｅ┐ｓｑｕａｒｅｄＳｑｕｅｅｚｉｎｇＣｈａｒａｃｔｅｒｉｓｔｉｃｏｆｔｈｅＢｉｎｏｍｉａｌ┐ｌｉｋｅＳｔａｔｅＸＩＵＸｉａｏｆｅｎｇＪＩＡＮＧＺｕｏｈｏｎｇ（ＨｅｉｌｏｎｇｊｉａｎｇＵｎｉｖｅｒｉｓｔｙ，Ｈａｒｂｉ...     

席夫碱化合物的SERS与NIR FT-Raman比较研究

席夫碱化合物的ＳＥＲＳ与ＮＩＲＦＴ┐Ｒａｍａｎ比较研究叶勇胡继明郁鉴源＊周群＊曾云鹗（武汉大学分析测试科学系武汉４３００７２）＊（清华大学分析中心北京１０００８４）ＳＥＲＳａｎｄＦＴ┐ＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｉｃＳｔｕｄｙｏｆＳｃｈｉｆＢａｓ...     

Theoretical Analysis and Experimental Study on Generation of a Dark Hollow Beam by a Micron-sized Hollow Optical Fiber

ＴｈｅｏｒｅｔｉｃａｌＡｎａｌｙｓｉｓａｎｄＥｘｐｅｒｉｍｅｎｔａｌＳｔｕｄｙｏｎＧｅｎｅｒａｔｉｏｎｏｆａＤａｒｋＨｏｌｏｗＢｅａｍｂｙａＭｉｃｒｏｎ┐ｓｉｚｅｄＨｏｌｏｗＯｐｔｉｃａｌＦｉｂｅｒＷＡＮＧＷｅｎｂｏ１，２ＧＡＯＷｅｉｊｉａｎ２ＹＩ...     

Multiple Effective Two-photon Correlated-emission Optical Bistability with Injected Squeezed Vacuum

ＭｕｌｔｉｐｌｅＥｆｅｃｔｉｖｅＴｗｏ┐ｐｈｏｔｏｎＣｏｒｅｌａｔｅｄ┐ｅｍｉｓｉｏｎＯｐｔｉｃａｌＢｉｓｔａｂｉｌｉｔｙｗｉｔｈＩｎｊｅｃｔｅｄＳｑｕｅｚｅｄＶａｃｕｕｍＨＵＡＮＧＨｏｎｇｂｉｎａ），ｂ）ＸＩＮＧＬｉｎｇｌｉｎｇｃ）ＳＯＮＧＪｉｌ...     

A Comparison of SRS effects between Uni-and Bi-directional WDM Transmission Systems

ＡＣｏｍｐａｒｉｓｏｎｏｆＳＲＳｅｆｅｃｔｓｂｅｔｗｅｅｎＵｎｉ┐ａｎｄＢｉ┐ｄｉｒｅｃｔｉｏｎａｌＷＤＭＴｒａｎｓｍｉｓｉｏｎＳｙｓｔｅｍｓＺＨＡＮＧＫａｎＸＩＥＬｉｎｚｈｅｎＸＵＡｎｓｈｉＷＵＤｅｍｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＥｌｅｃｔｒｏｎ...     

红外透过、反射吸收光谱研究手性液晶(M1)LB膜的结构与取向

利用ＦＴＩＲ光谱研究了一种手性液晶化合物（Ｍ１）ＬＢ膜的结构与取向,该化合物可以形成稳定的单层与多层膜。手性分子中,芳香环平面向于垂直基片表面,分子中的烷基链部分则与基底表面法线方向成一定的角度。     

Langmuir-Blodgett and Langmuir-Schaefer films of poly(5-amino-1-naphthol) conjugated polymer

Langmuir-type films of poly(5-amino-1-naphthol) conductive polymer were formed at the air/water interface. The surface pressure versus molecular area isotherms of the polymeric layers showed a high tendency to aggregate and non-monomolecular behavior on the water surface. Langmuir-Blodgett (LB) and Langmuir-Schaefer (LS) procedures have been successfully used to transfer the Langmuir films of this polymer onto hydrophilic silicon substrates. Atomic force microscopy images showed that the films obtained by the LS method have much better quality than those obtained by the LB one. In particular, we have obtained uniform and smooth LS films covering practically all the substrate, while the LB films showed rather aggregated material, only partially covering the substrate.     

水杨醛类希夫碱在LB膜上的光谱性能的研究

合成了两种末端碳锭长度不同的水杨醛类希夫碱N-十二烷基（2-羟基-5-硝基苯甲亚胺）和N-十六烷基（2-羟基-5-硝基苯甲亚胺），研究了它们在气-液界面上的成膜性能，并通过紫外、荧光、红外显微镜等光谱手段对它们在LB膜上的性能进行了表征。实验结果表明两种希夫碱分子在LB膜中都形成了J-聚体，末端碳链较长的希夫碱 成膜性能相对较好，并且在膜上也能光致发光，但希夫碱分子的LB膜存在一定的缺陷。     

半花菁LB膜的时间分辨荧光研究

利用紫外－可见吸收,稳态和时间分辨荧光等方法研究了半花菁与花生酸交替Ｙ型ＬＢ膜中分子聚集体的性质;吸收光谱和稳态荧光光谱峰位的蓝移说明ＬＢ膜中Ｈ聚集体的存在。从荧光衰工线得到了聚集体的组份含量、大小和寿命。     

Structure and Orientation of 1-Hydroxyl-5-Hexadecyloxy-Naphthalene LB Films Studied By UV-VIS and FTIR Spectroscopy

Ultraviolet-visible (UV-Vis), infrared transmission, and reflection absorption(RA) spectra have been measured for one-and multi-monolayer Langmuir-Blodgett(LB) films of C₁₆H₃₃30Naph(1,5)OH at various temperature to investigate dependencies of the aggregation and phase transitions on the number of monolayers. The UV-vis spectra of the LB films have revealed that the C₁₆H₃₃ONaph(1,5)OH forms aggregates in the LB film. From the temperature dependence of UV-vis absorption spectra, it is clear that the aggregate is gradual converted to monomer upto 80 °C. A comparison of the infrared transmission and RA spectra reveals that the hydrocarbon chains are tilted considerably in the LB film. As for the naphthalene ring part, the result suggest that the ring plane is oriented approximately perpendicular to the substrate surface. The Temperature dependence of infrared transmission spectra have been measured for 1-, 3-, and 11-monolayer LB films to investigate dependence of phase transitions on the number of monolayers. These observations show that the one-monolayer LB films does not have a clear order-disorder transition, while the three-and eleven-monolayer films have a phase transition near 60 °C. Therefore, it seems that the title angles of both the alkyl chain and chromophore part change largely concomitantly with the conversion from the aggregate to the monolayer.     

1－苄基－9－氢富勒烯－60LB多层膜的制备及其光学非线性性质

利用π－Ａ等温线、小角Ｘ射线衍射（ＳＡＸＤ）和光学测量方法研究了一种取代富勒烯（Ｃ６０－Ｂｅ）ＬＢ膜的结构特性。纯Ｃ６０－Ｂｅ分子以体相（ｂｕｌｋｐｈａｓｅ）的形式存在于气－液界面上。氮冠（醚）（ＮＣ）分子作为隔层材料，与Ｃ６０－Ｂｅ分子相混合可以制备性能优良的ＬＢ膜。π－Ａ、吸收和小角Ｘ光衍射测量表明：这种混合膜结构的改善是由于Ｃ６０－Ｂｅ分子镶嵌在ＮＣ分子的双脂链之间造成的。通过测量三次谐波产生（ＴＨＧ）可以推出Ｃ６０－Ｂｅ的三阶非线性系数χ（３）＝２．１×１０－１１ｅｓｕ。     

两种烷基取代喹吖啶酮衍生物LB膜的荧光特性

制备了两种烷基取代喹吖啶酮衍生物C6DHQA和C16DMQA的X型Langmuir-Blodgett(LB)膜,采用紫外-可见吸收、稳态荧光和时间分辨荧光的方法研究其溶液及LB的光学特性。研究结果表明,C16DMQA比C6DHQA的吸收谱整体红移,说明烷基链加长减小了分子的能级间隔;两者LB膜的吸收谱较溶液整体红移,说明在LB膜中形成了"J-聚集体"。两种材料的溶液及LB膜都有较强的荧光发射,溶液的荧光谱与吸收谱有很好的镜像对称关系,形成LB膜后,镜像对称关系被打破,两者第三个荧光峰相对强度差别很大。C6DHQA溶液中的荧光寿命为21ns左右,C16DMQA溶液中的荧光寿命为22ns左右,形成LB膜后,荧光寿命明显较少,两者第三个荧光峰对应的荧光寿命差别较大。其原因应归于C16DMQA分子在基板上的排列更密,分子间的相互作用力强,从而对能级结构的影响更大。     

取代基对双酞菁铥LB膜及光谱特性的影响

采用紫外-可见吸收光谱的方法研究了三种稀土夹心双酞菁铥化合物在溶液和LB膜中的聚集性和光谱特性。实验结果表明三种稀土双酞菁化合物在氯仿溶液中形成了H-聚集体,但当浓度比较低时,溶液中表现出单体的吸收。取代基OC₈H₁₇的加入使氯仿溶液中双酞菁铥化合物的聚集性减弱,而且使得吸收峰发生红移,对吸收峰的强度也有较大的影响,造成了Soret吸收带的分裂。另外,取代基OC₈H₁₇对LB膜中双酞菁分子的存在状态有较大的影响,在LB膜中,TmPc₂和TmPcPc*分子以H-聚集体的形式存在,而TmPc*₂分子以T-聚集体的形式存在。形成LB膜后,由于双酞菁分子之间排列紧密,相互作用加强,使得薄膜中分子聚集体的吸收峰相对于溶液中聚集体的吸收峰发生了一定的红移,薄膜中分子排列方向的不同对吸收光谱也有一定的影响。     

LB膜混合聚集体中极性基团相互作用对光学非线性的影响

通过紫外－可见吸收光谱、压力－面积等温线、二次谐波的测量，研究了不同活性分子混合聚集体的形成对ＬＢ膜光学性质的影响。分子极性基团间的相互作用，使激发态能量及平均偶极矩发生变化，导致ＬＢ膜的光学非线性明显地增强或减弱。     

聚丁二炔Langmuir-Blodgett薄膜的光声谱研究(Ⅱ) 光谱综合分析和荧光量子效率

本文用光声谱（ｐｈｏｔｏａｃｏｕｓｔｉｃｓｐｅｃｔｒｏｓｃｏｐｙ,ＰＡＳ）结合光吸收谱、荧光光谱等对在工业上有潜在应用前景的聚丁二炔（ｐｏｌｙｄｉａｃｅｔｙｌｅｎｅ,ＰＤＡ）Ｌａｎｇｍｕｉｒ－Ｂｌｏｄｇｅｔ（ＬＢ）薄膜进行了研究。对经不同气体环境处理的ＰＤＡＬＢ膜的紫外－可见光声谱、光吸收谱和荧光光谱的综合分析表明,ＰＤＡＬＢ膜的激发态弛豫过程中激子和极化子形成的元激发性质。此外,还讨论了ＰＤＡＬＢ膜的荧光量子效率。本文的研究结果表明,用光声谱研究ＬＢ膜,可以获取仅用其他光谱得不到的信息。