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首先,总结一篇文献,此部分不超过一页纸; 其次,结合课程学过的知识,做相关调研,分析文献。
Y. Chen et al, Controlling the exciton energy of a nanowire quantum dot by strain fields, Appl. Phys. Lett. 108, (2016) Y. Zhang et al, GaN hemispherical micro-cavities, Appl. Phys. Lett. 108, (2016) A. Pagies et al, Low-threshold terahertz molecular laser optically pumped by a quantum cascade laser, APL Photonics 1, (2014) Y. Wang et al, Conversion of the optical orbital angular momentum in a plasmon-assisted second-harmonic generation, Appl. Phys. Lett. 109, (2016) 期末论文要求: 首先,总结一篇文献,此部分不超过一页纸; 其次,结合课程学过的知识,做相关调研,分析文献。 12月23日9点30分-10点,交纸质版至教室。
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9 Nonlinear Optics
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Nonlinear susceptibility tensor
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The Physical origin of optical nonlinearities
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Oscillator model:
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Non-resonant nonlinearities
Second-order nonlinearities ((2)) -- Nonlinear frequency mixing
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= 2 - 21= 0 k = k2 -2k 1 = 0 Phase matching
Optical frequency conversion (Second Harmonic generation) Energy conservation Momentum conservation k = 2 - 21= 0 k = k2 -2k 1 = 0 Birefringence Phase Match (BPM)
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QPM Condition: k=(k2-2k )-Gm=0
Ln Lp dij Lp+Ln X Y Z X QPM Condition: k=(k2-2k )-Gm=0
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Overview of third-order phenomena
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The optical Kerr effect and the nonlinear rafractive index
Frequency tripling Phase match problem The optical Kerr effect and the nonlinear rafractive index ( degeneate four-wave mixing) No phase match problem (K: Kerr constant)
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Stimulated Raman scattering
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Resonant nonlinearities in semiconductors
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Nonlinear optical imaging
非线性光学的应用——成像 Nonlinear optical imaging Nonlinear Optics
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Second-harmonic imaging
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Two-photon/Multi-photon imaging
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Coherent anti-Stokes Raman scattering (CARS)
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Stimulated Raman Scattering
CARS SRS
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Pump-Probe: Excited state absorption
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Pump-Probe: Stimulated Emission
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几种超分辨成像技术 选一种合适的荧光物质,按顺序先给激发脉冲(2ps左右),等它跃迁上去了马上给一个受激辐射波长的脉冲(250ps左右),然后用二向色镜区分受激辐射跟自发辐射,探测过来的自发辐射信号。受激辐射越大(橡皮擦得干净),剩下的PSF越小,也就是分辨率越高。
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STORM,全称是Stochastic Optical Reconstruction Microscopy。
其实虽然不能分辨,但是如果横竖就那么一个,那你还是很容易从一个高斯分布的结构中对其精确定位的,就像一座山,如果之前告诉你这个山是高斯正态分布型的,你绝对可以把山顶的位置比较精确地定位,而不是在半山腰量一下山的周长,说,山顶就在这里面儿
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PALM: Photoactivated localization microscopy
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SSIM, 全名Saturated Structured Illumination Microscopy,饱和结构光照明显微
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