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调制激光
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  modulated laser
     Dynamics of DNA Molecule with Modulated Laser
     DNA分子在调制激光作用下的动力学行为研究
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     Temperature Effect of a Modulated Laser Beam
     调制激光束的温度效应
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     Experimental and Theoretical Study of the Propagation of the Modulated Laser Beam in Kerr-medium
     克尔介质中调制激光束传输的实验和理论研究
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     Study on Photothermal Characteristics of Anisotropic Materials Irradiated by Modulated Laser
     调制激光束加热下各向异性材料的光热特性研究
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     Acoustooptic Modulated Laser Measuring Technique
     声光调制激光测量技术
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  modulation laser
     This dissertation focused firstly on the measurement of mid-infrared laser magnetic resonance spectra of ~(14)N~(16)O、~(15)N~(16)O and their global analysis with the spectral data of all isotopomers ~mN~nO(m=14,15; n= 16,17,18), and then on the velocity modulation laser electronic absorption spectroscopy of transient molecule CS~+ and its deperturbation analysis.
     本论文先介绍双原子分子~(14)N~(16)O、~(15)S~(16)O的激光磁共振光谱测量及~mN~nO(m=14,15;n=16,17,18)光谱数据的同位素分析,然后介绍瞬态分子离子CS~+的速度调制激光电子吸收光谱的测量及其数据分析。
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     The (A~2Π_i)-(X~2Σ~+) (2, 0) band of CN was reinvestigated in the AC glow discharge of CH_3CN with He as the carrier gas using near-infrared concentration modulation laser spectroscopy.
     利用近红外差分浓度调制激光光谱技术,我们在氦气和乙腈的交流辉光放电中观测到了CN自由基(A~2Π_i)-(X~2Σ~+)(2,0)带的吸收谱,测量和标识了189条谱线,包括全部12个转动支带。
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     OUTPUT CHARACTERISTICS OF INTRACAVITY MAGNETOOPTIC MODULATION LASER SYSTEM
     腔内磁光调制激光系统的输出特性
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     Multistability output characteristics of an intracavity magneto-optic modulation laser system
     腔内磁光调制激光系统多稳态输出特性
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     ON THE LINE SHAPE OF VELOCITY MODULATION LASER SPECTROSCOPY 
     速度调制激光光谱线型的研究
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     Study on the First Negative Band (b~4∑~-_g-a~4Π_u)of O~+_2 Using the Velocity Modulation Spectroscopy Combined with the Optical Heterodyne
     O_2~+分子离子第一负带系(b~4∑~-_g—a~4Π_u)光外差-速度调制激光光谱研究
短句来源
     Study on the Rotational Spectra of the Weak Band (2, 3) in the Comet-tail System (A~2Π-X~2∑~+) of CO~+ Using Velocity-Modulation Laser Spectroscopy
     CO~+彗尾带系(A~2Π-X~2∑~+)(2,3)带速度调制激光光谱研究
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     NO_2 Zeeman Modulation Spectrum
     NO_2分子的塞曼调制激光光谱
短句来源
     FIELD-MODULATION LASER SPECTROSCOPY OF NO_2 MOLECULE
     NO_2分子的场调制激光光谱
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     A PPM Wireless Laser Communication Transceiver Based on PIC MCU
     基于PIC单片机的PPM调制激光无线通信收发器
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  modulated laser
Shock Relations for a Detonation Regime Developing under the Action of Frequency-Modulated Laser Radiation
      
Vibrations of a thin bounded plate excited by modulated laser radiation
      
Observation of oriented 23S1 helium atoms in a sodium-helium plasma irradiated by polarization-modulated laser radiation
      
A change in the conductivity of sodium-helium plasma interacting with polarization-modulated laser radiation tuned to sodium D1
      
Interference of speckle fields in the diffraction zone of a focused spatially modulated laser beam by a random phase screen
      
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  modulation laser
We have investigated the density of states for deep local centers and special points of the M0 type in β-CdP2 using amplitude modulation laser spectroscopy.
      


A method of frequency stabilization——bias frequency locking, for output of unmodulated laser is introduced. A detailed description of operation principles, main components of the system and design considerations for bias frequancy locked laser is given. Finally, a practical circuit for frequency stabilization of iodine stabilized He-Ne laser is described.

本文介绍了一种无调制激光输出的“偏频锁定”稳频方法.文中对“偏频锁定”型激光器的工作原理、系统的主要部件及设计的考虑进行了较详细的描述.最后还给出了一台已用于碘稳定He-Ne激光器的“偏频锁定”稳频的实际电路.

The theory and corresponding experimental results of spatial degree of coherence modulation with ultrasonic standing wave which is controlled by electricity are reported and experimental curves are made under different transducer voltages. In addition, we have measured and probed the optical degree of coherence modulation by Lithium Niobate EO-crystal as a beginning work in this field.

本文报道和讨论了用超声驻波调制激光相干度的原理与实验结果.给出了不同声功率下双狭缝干涉的光强分布,并作出了调制相干因子与换能器所加高频电压的关系曲线.此外,还对铌酸锂电光调制器的调制相干度作用进行了初步测量与探讨.

Based on the density matrix equations with 3-j symbol expression, we calculated the intensities and lineshapes of fluoresence signals for two-photon transitions between homonuclear diatomio molecular singlet electronic states, which have a near-resonant intermediate enhancing level. Calculations were made for interactions between a variety of polarization modulated laser fields with three level systems. Signals obtained by the phase-sensitive detection method showed that either the circular polarization modulated...

Based on the density matrix equations with 3-j symbol expression, we calculated the intensities and lineshapes of fluoresence signals for two-photon transitions between homonuclear diatomio molecular singlet electronic states, which have a near-resonant intermediate enhancing level. Calculations were made for interactions between a variety of polarization modulated laser fields with three level systems. Signals obtained by the phase-sensitive detection method showed that either the circular polarization modulated two-photon speotroscopy (GPMTPS) or the linear polarization modulated method (LPMTPS) could be used to eliminate the Doppler broadening background caused by the adsorption of two photons from one beam. In addition these methods could be used to identify the specific branches of the two-photon lines from their irreguler spectral structures without the need of knowing the upper level constants. Signal ratios of equal-frequency two-photon transitions under circular polarization modulation condition to those with linear polarization modulation were listed for all the branches with ΔJ= ±2, ±1 and 0. Differences of the results might be orders of magnitude for a resonable large J value. On the other hand signal ratios of two-photon branches in the intensity modulated circular polarization laser field to those in linear polarization fields (shown in another list) are all in the same order. Furthermore, a table is presented to show the relative signal intensities of unequal-frequency polarization modulated two-photon transitions between various electronic states. It might be useful for determining intermediate or upper electronic states of a resolved two-photon absorption line. PMTPS is thus expected to be a useful method for molecular spectroscopy or highresolution laser speotroscopy.

本文从密度矩阵运动方程出发,推导出当各种不同偏振调制激光场与三能级粒子系统相互作用时,同核双原子分(具近共振中间能波)单重电子态之间的双光子跃迁所产生的荧光信号强度和线型.对比偏振调制的与光子强调制的信号强度和线型时,表明:偏振调制双光子光谱(PMTPS)不仅能消除由吸收同一光束的同向双光子所产生的多普勒加宽背景,极大地提高光谱分辨率;而且不同电子态之间跃迁的O、P、Q、R、S支谱线强度与激光偏振状态有关,可借以标识分子的高激发电子终态和转动能级,有选择地简化复杂的分子光谱.可以预期,PMTPS是研究分子光谱和高分辨率激光光谱极有用的一种技术.

 
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