Enhancing the emission color sensitivity of bulk microcrystals in response to excitation power density and NIR wavelength by introducing Li+/Lu3+ for anti-counterfeiting

2019 ◽  
Vol 770 ◽  
pp. 1181-1188 ◽  
Author(s):  
Dandan Ju ◽  
Feng Song ◽  
Jun Zhang ◽  
Chengguo Ming ◽  
Feifei Song ◽  
...  
Keyword(s):  
Power Density ◽  
Excitation Power ◽  
Excitation Power Density ◽  
Emission Color ◽  
Color Sensitivity

The sensitization of laser-induced heat of Er3+ doped Y2O3 nanocrystals by codoped with Mn2+

2015 ◽  
Vol 29 (22) ◽  
pp. 1550158
Author(s):  
Yunfeng Bai ◽  
Minjie Luan ◽  
Linjun Li ◽  
Zhelong He ◽  
Dongyu Li
Keyword(s):  
Power Density ◽  
Thermal Emission ◽  
Energy Levels ◽  
Excitation Power ◽  
Threshold Power ◽  
Excitation Power Density ◽  
Ir Laser ◽  
Order Of Magnitude ◽  
Low Threshold ◽  
Density Threshold

Low threshold power density cw laser-induced heat has been observed in [Formula: see text] and [Formula: see text] codoped [Formula: see text] nanocrystals under excitation by a 980 nm IR laser. Codoped [Formula: see text] remarkably reduces the power density threshold of laser-induced heat compared with [Formula: see text] doped [Formula: see text] nanocrystals. When the excitation power density exceed [Formula: see text], [Formula: see text] codoped [Formula: see text] nanocrystals emit strong blackbody radiation. The thermal emission of [Formula: see text] should originate from the multiphonon relaxation between neighboring energy levels. One additional UC-PL enhancement is observed. The UC-PL intensity can be enhanced by an order of magnitude through high temperature calcination caused by light into heat.

Excitation-Power-Density Dependent ac Surface Photovoltages in Radiation-Damaged Si Wafer

1984 ◽  
Vol 23 (Part 1, No. 6) ◽  
pp. 778-779 ◽  
Author(s):  
Chusuke Munakata ◽  
Noriaki Honma ◽  
Hajime Hayakawa
Keyword(s):  
Power Density ◽  
Excitation Power ◽  
Excitation Power Density ◽  
Density Dependent ◽  
Si Wafer

Effect of excitation power density on the upconversion luminescence of LaF3:Yb3+, Er3+ nanocrystals

2009 ◽  
Vol 485 (1-2) ◽  
pp. 493-496 ◽  
Author(s):  
Yuqiu Qu ◽  
Xianggui Kong ◽  
Yajuan Sun ◽  
Qinghui Zeng ◽  
Hong Zhang
Keyword(s):  
Power Density ◽  
Upconversion Luminescence ◽  
Excitation Power ◽  
Excitation Power Density

Relation between Excitation Power Density and Er3+ Doping Yielding the Highest Absolute Upconversion Quantum Yield

2014 ◽  
Vol 118 (51) ◽  
pp. 30106-30114 ◽  
Author(s):  
Stefan Fischer ◽  
Benjamin Fröhlich ◽  
Karl W. Krämer ◽  
Jan Christoph Goldschmidt
Keyword(s):  
Quantum Yield ◽  
Power Density ◽  
Excitation Power ◽  
Excitation Power Density

A microfluidic-photonic-integrated device with enhanced excitation power density

2010 ◽  
Author(s):  
Benjamin R. Watts ◽  
Thomas Kowpak ◽  
Chang-Qing Xu ◽  
Shiping Zhu ◽  
Zhiyi Zhang
Keyword(s):  
Power Density ◽  
Excitation Power ◽  
Excitation Power Density ◽  
Integrated Device
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