A theoretical model of quasi-three-level laser system is developed, in which both the thermally induced depolarization loss and the effect of energy-transfer upconversion are taken into account. Based on the theoretic...A theoretical model of quasi-three-level laser system is developed, in which both the thermally induced depolarization loss and the effect of energy-transfer upconversion are taken into account. Based on the theoretical investigation of the influences of output transmission and incident pump power on thermally induced depolarization loss, the output performance of 946 nm linearly polarized Nd：YAG laser is experimentally studied. By optimizing the transmission of output coupler, a 946 nm linearly polarized continuous-wave single-transverse-mode laser with an output power of 4.2 W and an optical-optical conversion efficiency of 16.8% is obtained, and the measured beam quality factors are M2 = 1.13 and My2 = 1.21. The theoretical prediction is in good agreement with the experimental result.展开更多
Recently,materials with circularly polarized luminescence(CPL)properties have attracted substantial attention because they offer new perspectives in fundamental research and wide applications in photonics,bio-encoding...Recently,materials with circularly polarized luminescence(CPL)properties have attracted substantial attention because they offer new perspectives in fundamental research and wide applications in photonics,bio-encoding,catalysis,and so forth.Such importance has recently promoted the development of CPL-active materials from the traditional realm of organics to newly released areas in inorganics.Due to the advantages of inorganic nanomaterials in stability,high luminescent quantum efficiency,material diversity,and the diversity of shapes and sizes,extensive research about CPL active inorganic nanomaterials has been done in the past decades leading to great signs of progress on synthesis,characterizations,and potential applications.In this review,therefore,we will thoroughly describe the general design principles of inorganic nanomaterials with CPL activity,basically according to the origins of chirality in inorganic nanomaterials:intrinsic chirality in inorganic nanomaterials,ligand-induced chirality,and structural chirality caused by the supramolecular assembly,respectively.The representative applications of the CPL-active inorganic nanomaterials are presented with respect to challenges,prospective,and problems that unsolved to date.展开更多
基金Project supported by the National Key R&D Program of China(Grant No.2016YFA0301401)the Fund for Shanxi "331 Project" Key Subjects Construction,China(Grant No.1331KS)
文摘A theoretical model of quasi-three-level laser system is developed, in which both the thermally induced depolarization loss and the effect of energy-transfer upconversion are taken into account. Based on the theoretical investigation of the influences of output transmission and incident pump power on thermally induced depolarization loss, the output performance of 946 nm linearly polarized Nd：YAG laser is experimentally studied. By optimizing the transmission of output coupler, a 946 nm linearly polarized continuous-wave single-transverse-mode laser with an output power of 4.2 W and an optical-optical conversion efficiency of 16.8% is obtained, and the measured beam quality factors are M2 = 1.13 and My2 = 1.21. The theoretical prediction is in good agreement with the experimental result.
基金National Natural Science Foundation of China,Grant/Award Numbers:21773103,21802027,91856115Strategic Priority Research Program of the Chinese Academy of Sciences,Grant/Award Number:XDB36000000Ministry of Science and Technology of the People’s Republic of China,Grant/Award Number:2017YFA0206600。
文摘Recently,materials with circularly polarized luminescence(CPL)properties have attracted substantial attention because they offer new perspectives in fundamental research and wide applications in photonics,bio-encoding,catalysis,and so forth.Such importance has recently promoted the development of CPL-active materials from the traditional realm of organics to newly released areas in inorganics.Due to the advantages of inorganic nanomaterials in stability,high luminescent quantum efficiency,material diversity,and the diversity of shapes and sizes,extensive research about CPL active inorganic nanomaterials has been done in the past decades leading to great signs of progress on synthesis,characterizations,and potential applications.In this review,therefore,we will thoroughly describe the general design principles of inorganic nanomaterials with CPL activity,basically according to the origins of chirality in inorganic nanomaterials:intrinsic chirality in inorganic nanomaterials,ligand-induced chirality,and structural chirality caused by the supramolecular assembly,respectively.The representative applications of the CPL-active inorganic nanomaterials are presented with respect to challenges,prospective,and problems that unsolved to date.
