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Stimulated Raman Scattering in Melilite‐Type Crystals Ca2MgSi2O7 and Ca2Ga2SiO7
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-06-14 , DOI: 10.1002/crat.202000038 Alexander A. Kaminskii 1 , Ladislav Bohatý 2 , Hans Joachim Eichler 3 , Oliver Lux 3, 4 , Hanjo Rhee 3 , Manfred Burianek 2, 5 , Petra Becker 2
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-06-14 , DOI: 10.1002/crat.202000038 Alexander A. Kaminskii 1 , Ladislav Bohatý 2 , Hans Joachim Eichler 3 , Oliver Lux 3, 4 , Hanjo Rhee 3 , Manfred Burianek 2, 5 , Petra Becker 2
Affiliation
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χ(3)‐nonlinear optical interactions in two melilite‐type stimulated Raman scattering (SRS)‐active non‐centrosymmetric crystals, Ca2MgSi2O7 and Ca2Ga2SiO7, formerly known as Nd3+‐laser media, are presented. Under picosecond pumping at 1.064 and 0.532 µm cascaded and cross‐cascaded effects occur in these tetragonal silicates. Besides the SRS‐promoting phonon modes with energy of ωSRS1 ≈ 908 cm−1 and ωSRS2 ≈ 668 cm−1 for Ca2MgSi2O7, and ωSRS1 ≈ 720 cm−1 and ωSRS2 ≈ 550 cm−1 for Ca2Ga2SiO7, respectively, combined phonon modes are observed. For Ca2MgSi2O7 new data in a broad wavelength range of refractive indices and their dispersion are given as well. The observed χ(3)‐nonlinear properties expand the functionality of the studied silicates and foreshadow their use in self‐frequency Raman laser converters (self‐SRS lasers).
中文翻译：
镍铁矿型晶体Ca2MgSi2O7和Ca2Ga2SiO7中的受激拉曼散射
χ （3）在两种由陨石型激发的拉曼散射（SRS）活性的非中心对称晶体Ca 2 MgSi 2 O 7和Ca 2 Ga 2 SiO 7中的非线性光学相互作用，以前称为Nd 3+激光介质，被提出。在皮秒泵浦下，这些四方硅酸盐在1.064和0.532 µm的泵浦下会发生级联和交叉级联效应。除了与的能量的SRS-促进声子模式ω SRS1 ≈908厘米-1和ω SRS2 ≈668厘米-1为的Ca 2 MgSi系2 ö 7和ω SRS1 ≈720厘米-1和ω SRS2 ≈550厘米-1为的Ca 2嘎2的SiO 7，分别，结合声子模式中观察到。对于Ca 2 MgSi 2 O 7，还给出了在宽波长范围内的折射率及其色散的新数据。观测到的χ （3）非线性特性扩展了所研究硅酸盐的功能，并预示了它们在自频拉曼激光转换器（自SRS激光器）中的使用。
更新日期：2020-08-14
中文翻译：
镍铁矿型晶体Ca2MgSi2O7和Ca2Ga2SiO7中的受激拉曼散射
χ （3）在两种由陨石型激发的拉曼散射（SRS）活性的非中心对称晶体Ca 2 MgSi 2 O 7和Ca 2 Ga 2 SiO 7中的非线性光学相互作用，以前称为Nd 3+激光介质，被提出。在皮秒泵浦下，这些四方硅酸盐在1.064和0.532 µm的泵浦下会发生级联和交叉级联效应。除了与的能量的SRS-促进声子模式ω SRS1 ≈908厘米-1和ω SRS2 ≈668厘米-1为的Ca 2 MgSi系2 ö 7和ω SRS1 ≈720厘米-1和ω SRS2 ≈550厘米-1为的Ca 2嘎2的SiO 7，分别，结合声子模式中观察到。对于Ca 2 MgSi 2 O 7，还给出了在宽波长范围内的折射率及其色散的新数据。观测到的χ （3）非线性特性扩展了所研究硅酸盐的功能，并预示了它们在自频拉曼激光转换器（自SRS激光器）中的使用。
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