Structure, crystalline perfection, mechanical, second harmonic generation efficiency, laser damage threshold and piezoelectric properties of bis nicotinamidium bis D-tartrate 1.25-hydrate single crystals

2015 ◽  
Vol 46 ◽  
pp. 504-509 ◽  
Author(s):  
G. Senthil Murugan ◽  
P. Ramasamy
Keyword(s):  
Single Crystals ◽  
Harmonic Generation ◽  
Piezoelectric Properties ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Crystalline Perfection ◽  
Generation Efficiency ◽  
Second Harmonic Generation Efficiency

Optical, Dielectric and SHG measurement of semiorganic NLO single crystals: Triglycine Sodium halides

2014 ◽  
Vol 1698 ◽  
Author(s):  
R. Ananad kumari
Keyword(s):  
Sodium Chloride ◽  
Single Crystals ◽  
Second Harmonic ◽  
Threshold Energy ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Second Harmonic Generation Efficiency ◽  
Ftir Spectral Analysis ◽  
Sodium Halides ◽  
Evaporation Technique

ABSTRACTSingle crystals of semiorganic nonlinear optical material Triglycine Sodium Halides(TGSH) have been grown from aqueous solution by slow evaporation technique at constant temperature. The powder X-ray diffraction of the grown crystals is recorded and indexed. Functional groups present in the samples are identified by FTIR spectral analysis. The optical absorption studies shows that the UV cut off wavelength is around 300nm and has a wide transparency window. The powder second harmonic generation efficiency of the crystals is measured by Kurtz and Perry powder technique using Nd:YAG laser and it is 1.5 times for Triglycine Sodium Chloride, 1.2 times for Triglycine Sodium Bromide and 1.4 times for Triglycine potassium Iodide crystals that of the standard KDP crystals. Triglycine Sodium halide crystals show very good stability under laser irradiation with no signs of decomposition. Laser damage threshold energy density of Triglycine Sodium Iodide is found to be 857 MW/cm2 and 540MW/cm2 for Triglycine Sodium Chloride crystals.

From CuFeS2 to Ba6Cu2FeGe4S16: rational band gap engineering achieves large second-harmonic-generation together with high laser damage threshold

2019 ◽  
Vol 55 (96) ◽  
pp. 14510-14513 ◽  
Author(s):  
Wangzhu Cao ◽  
Dajiang Mei ◽  
Yi Yang ◽  
Yuanwang Wu ◽  
Lingyun Zhang ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Band Gap ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Band Gap Engineering ◽  
High Laser

From CuFeS2, the introduction of Ge leads to an increase in band gap. The ordered arrangement of NLO active units [GeS4] results in a strong SHG response. Finally, Ba6Cu2FeGe4S16 exhibits good NLO performance (SHG, 1.5 × AgGaSe2; LDT, 2 × AgGaSe2).

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