Tomget sharper spectral lines, they started by successfully developing nonlinear methods such as saturation or two-photon spectroscopy.
为了获得更加清晰的光谱线，他们成功发现了非线性方法像磁性饱和和双光子光谱学。
The high resolution spectrum can be obtained through many methods, such as saturated absorption spectroscopy, Doppler free methods of two-photon spectroscopy, and etc.
提高热原子光谱的分辨率可以有许多方法，如饱和吸收光谱技术、双光子光谱的消多普勒技术等。
Raman spectrum is a kind of molecule scattering spectroscopy, which is characterized by the frequency excursion that caused by interactions of molecule and photon to show the information of molecule.
拉曼光谱是一种分子散射光谱，通过与分子相互作用的光子产生的表征分子振动或转动能级差的特征频移，来反映分子结构或成分的信息。
Two-photon resonant NFWM is a Doppler-free spectroscopy by using the narrow bandwidth of incident laser beams.
当用窄带宽的激光时，该技术对里德堡能级的窄光谱结构可以获得消多普勒的分辨率。
Photon echo in polarization beat spectroscopy is studied for a V-type three-level system.
利用相位共轭极化拍频光谱术对V型三能级系统中的光子回波进行了研究。
METHODS: The SPIO nanoparticle was obtained by means of classical coprecipitation in dextran solution and its size determined by electron microscopy and photon-correlation spectroscopy.
方法：在葡聚糖溶液中，通过经典的共沉淀方法获得SPIO纳米颗粒，用电镜和光子相关光谱法技术分析颗粒的大小。
The nonlinear spectroscopy created by many kind of optical processes are observed while two-photon resonance enhanced the atomic nonlinear susceptibility.
双光子共振增强了碱金属原子的非线性极化率，可以观测到多种非线性光学过程产生的非线性光谱。
Digital correlation is an important technique in photon correlation spectroscopy. The quality of auto-correlation function determines the measure result.
数字相关技术是纳米颗粒测量技术中的一个关键环节，自相关函数的估计质量直接影响颗粒测量结果。
The evaluating method of uncertainty for particle size analysis by photon correlation spectroscopy was introduced.
介绍了PCS方法测定颗粒平均粒径的不确定度评定方法。
The evaluating method of uncertainty for particle size analysis by photon correlation spectroscopy was introduced.
介绍了PCS方法测定颗粒平均粒径的不确定度评定方法。
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