近日,美国化学学会会刊以Metal Thiophosphates with Good Mid-Infrared Nonlinear Optical Performances：A First-Principles Prediction and Analysis为题,发表了中科学院理化技术研究所林哲帅课题组的研究工作。中红外（波长2-8μm...近日,美国化学学会会刊以Metal Thiophosphates with Good Mid-Infrared Nonlinear Optical Performances：A First-Principles Prediction and Analysis为题,发表了中科学院理化技术研究所林哲帅课题组的研究工作。中红外（波长2-8μm）激光变频材料在化学、信息、生物、远程通讯和光电对抗等领域具有非常重要的应用,但目前已发现的材料还难以满足工业和商业的需求。通过高通量研究平台,可以极大地提高这些光电功能材料的研究。展开更多
近日,美国化学学会会刊（J.Am.Chem.Soc.2015,DOI：10.1021/jacs.5b07920）以Metal Thiophosphates with Good Mid-Infrared Nonlinear Optical Performances：A First-Principles Prediction and Analysis＂为题,发表了理化所功能材料...近日,美国化学学会会刊（J.Am.Chem.Soc.2015,DOI：10.1021/jacs.5b07920）以Metal Thiophosphates with Good Mid-Infrared Nonlinear Optical Performances：A First-Principles Prediction and Analysis＂为题,发表了理化所功能材料与激光技术院重点实验室晶体中心林哲帅课题组的研究工作。展开更多
采用熔盐顶部籽晶法从K 2 Mo 3 O 10-B 2 O 3助熔剂中生长出尺寸为20 mm的优质GdAl 3(BO 3)4(简称GAB)和Nd^3+激活的自变频激光晶体。确定了GAB晶体的透光波长范围、折射率和倍频系数随波长的变化,结果表明其在整个透光范围内均可实现...采用熔盐顶部籽晶法从K 2 Mo 3 O 10-B 2 O 3助熔剂中生长出尺寸为20 mm的优质GdAl 3(BO 3)4(简称GAB)和Nd^3+激活的自变频激光晶体。确定了GAB晶体的透光波长范围、折射率和倍频系数随波长的变化,结果表明其在整个透光范围内均可实现相位匹配。测定了Nd^3+∶GAB晶体在室温下的偏振吸收、荧光光谱和荧光寿命,进行了光谱计算,测试了晶体的自变频激光性能,实现了紫外-可见光-红外-中红外多波段激光输出。展开更多
Modern opticai theory has shown that the far field or Fraunbofer diffraction equipment is identical to the Fourier spectral analyzer. In the Fourier speetral analyzer the Fourier spectra or the Fraunhofer diffaction p...Modern opticai theory has shown that the far field or Fraunbofer diffraction equipment is identical to the Fourier spectral analyzer. In the Fourier speetral analyzer the Fourier spectra or the Fraunhofer diffaction pattern of a graph is formed on the back focal plane when a laser beam is directed on the graph lying on the front foeal plane ; the Fourier spectra of the graph is also subjected to change during the deformation of the graph. Through analyzing the change of Fourier spectra the deformation of the graph can be obtained. A few years ago,based on the above principles the authors proposed a new technique of strain measurement by laser spectral analysis. Demonstration and discussion will be made in detail in this paper.展开更多
文摘近日,美国化学学会会刊以Metal Thiophosphates with Good Mid-Infrared Nonlinear Optical Performances：A First-Principles Prediction and Analysis为题,发表了中科学院理化技术研究所林哲帅课题组的研究工作。中红外（波长2-8μm）激光变频材料在化学、信息、生物、远程通讯和光电对抗等领域具有非常重要的应用,但目前已发现的材料还难以满足工业和商业的需求。通过高通量研究平台,可以极大地提高这些光电功能材料的研究。
文摘近日,美国化学学会会刊（J.Am.Chem.Soc.2015,DOI：10.1021/jacs.5b07920）以Metal Thiophosphates with Good Mid-Infrared Nonlinear Optical Performances：A First-Principles Prediction and Analysis＂为题,发表了理化所功能材料与激光技术院重点实验室晶体中心林哲帅课题组的研究工作。
文摘采用熔盐顶部籽晶法从K 2 Mo 3 O 10-B 2 O 3助熔剂中生长出尺寸为20 mm的优质GdAl 3(BO 3)4(简称GAB)和Nd^3+激活的自变频激光晶体。确定了GAB晶体的透光波长范围、折射率和倍频系数随波长的变化,结果表明其在整个透光范围内均可实现相位匹配。测定了Nd^3+∶GAB晶体在室温下的偏振吸收、荧光光谱和荧光寿命,进行了光谱计算,测试了晶体的自变频激光性能,实现了紫外-可见光-红外-中红外多波段激光输出。
文摘Modern opticai theory has shown that the far field or Fraunbofer diffraction equipment is identical to the Fourier spectral analyzer. In the Fourier speetral analyzer the Fourier spectra or the Fraunhofer diffaction pattern of a graph is formed on the back focal plane when a laser beam is directed on the graph lying on the front foeal plane ; the Fourier spectra of the graph is also subjected to change during the deformation of the graph. Through analyzing the change of Fourier spectra the deformation of the graph can be obtained. A few years ago,based on the above principles the authors proposed a new technique of strain measurement by laser spectral analysis. Demonstration and discussion will be made in detail in this paper.
