Laser-induced excited-state crossover and spectral variation of Cr3+ in the high-crystal-field environment of CaGa2O4

Rai M.; Singh S. K.; Morthekai P.

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Laser-induced excited-state crossover and spectral variation of Cr3+ in the high-crystal-field environment of CaGa2O4

机译：CaGa2O4的高场场环境下激光诱导的Cr3 +激发态交叉和光谱变化

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We have studied a wide-bandgap oxide semiconductor, CaGa1.99Cr0.01O4, which possesses high crystal field strength and develops deep traps. These traps efficiently store electric charges after excitation with ultraviolet light. Stimulation of trap charges using infrared radiation (both coherent and incoherent) gives wideband emission of Cr3+ in the red-infrared region, which is similar to the photon upconversion process in lanthanides. Under laser excitation, high photon density and local heating pronounce the coupling of E-2 and T-4(2) states and causes an excited state crossover of the population from the E-2 to T-4(2) state. This expands the emission band-width of Cr3+ up to 900 nm. (C) 2016 Optical Society of America

机译：我们研究了宽带隙氧化物半导体CaGa1.99Cr0.01O4，该半导体具有高的晶体场强度并会形成深陷阱。这些陷阱在被紫外线激发后有效地存储电荷。使用红外辐射（相干和非相干）刺激陷阱电荷会在红红外区域产生Cr3 +的宽带发射，这与镧系元素的光子上转换过程相似。在激光激发下，高光子密度和局部加热会宣告E-2和T-4（2）态的耦合，并导致激发态的人口从E-2跃迁到T-4（2）态。这将Cr3 +的发射带宽扩展到了900 nm。（C）2016美国眼镜学会

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《Optics Letters》 |2016年第15期|共4页
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Rai M.; Singh S. K.; Morthekai P.;
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1. Laser-induced excited-state crossover and spectral variation of Cr3+ in the high-crystal-field environment of CaGa2O4 [J] . Rai M., Singh S. K., Morthekai P. Optics Letters . 2016,第15期

机译：CaGa2O4的高场场环境下激光诱导的Cr3 +激发态交叉和光谱变化
2. Investigations of the optical and EPR spectral data for the trigonal Cr3+ center in ZnGa2O4: Cr3+ crystal with a unified method complete diagonalization of energy matrix [J] . Mei Yang, Liu Wan-Hai, Zheng Wen-Chen Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic . 2018,第期

机译：Znga2O4中Trigonal CR3 +中心的光学和EPR光谱数据的研究：CR3 +晶体的统一方法完全对角化能量矩阵
3. Excited-state relaxation dynamics of Cr3+ in YAl3(BO3)(4) [J] . Dominiak-Dzik G., Ryba-Romanowski W., Grinberg M., Journal of Physics. Condensed Matter . 2002,第20期

机译：YAl3（BO3）（4）中Cr3 +的激发态弛豫动力学
4. Opto-structural study of A_(2)BMF_(6): Cr~(3+) elpasolite crystals. Variation of the (CrF_(6))~(3-)-complex optical properties with Cr-F bond distance, hydrostatic pressure and excited-state crossover [C] . I Hernandez, F Rodriguez, A Tressaud AIRAPT International Conference on High Pressure Science and Technology . 2007

机译：A_（2）BMF_（6）的光学结构研究：Cr〜（3+）Elpasolite晶体。（CRF_（6））〜（3 - ） - 具有CR-F键距离，静液压压力和兴奋状态交叉的复合光学性能的变化
5. Laser-induced, grating spectroscopy exploring new excited-state geometries. [D] . Dowd, Thomas James, Jr. 2000

机译：激光诱导的光栅光谱，探索新的激发态几何。
6. Growth, Mechanical, Thermal and Spectral Properties of Cr3+∶MgMoO4 Crystal [O] . Lingyun Li, Yisheng Huang, Lizhen Zhang, 2009

机译：Cr3 + ∶MgMoO4晶体的生长，力学，热学和光谱性质
7. Hyperspectral environmental illumination maps: characterizing directional spectral variation in natural environments [O] . Takuma Morimoto, Sho Kishigami, João M. M. Linhares, 2019

机译：高光谱环境照明图：在自然环境中表征定向谱变化
8. Measurement of Excited-State Densities During High-Current Operation of a Hydrogen Thyratron Using Laser-Induced Fluorescence [R] . Erwin, D. A., Gundersen, M. A. 1986

机译：用激光诱导荧光法测量氢能子弹管大电流操作期间激发态密度

Laser-induced excited-state crossover and spectral variation of Cr3+ in the high-crystal-field environment of CaGa2O4

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