Creating optical anisotropy of CdSe/ZnS quantum dots by coupling to surface plasmon polariton resonance of a metal grating.
An efficient method that can be used to control the optical anisotropy of CdSe/ZnS quantum dots by coupling to the surface plasmon polariton resonance of a metal grating has been demonstrated. It is found that the unpolarized emission and Raman scattering signals arising from CdSe/ZnS quantum dots can be manipulated and exhibit a strong anisotropic behavior based upon our strategy. The optical anisotropy is interpreted in terms of the coupling between the directional surface plasmon of metal grating and the emitted light beam of quantum dots. Due to the importance of quantum dots in optoelectronic devices, our new approach should be useful for future application.
Fu
H K
HK
Department of Physics, National Taiwan University, Taipei 106, Taiwan, Republic of China. edit1209@phys.ntu.edu.tw
Chen
C W
CW
Wang
C H
CH
Chen
T T
TT
Chen
Y F
YF
D016880:Anisotropy; D019187:Cadmium Compounds / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D008027:Light; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D055095:Optics and Photonics; D045663:Quantum Dots; D012542:Scattering, Radiation; D018036:Selenium Compounds / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013440:Sulfides / Q000737:chemistry*; D020349:Surface Plasmon Resonance; D017967:Zinc Compounds / Q000737:chemistry*
D019187:Cadmium Compounds; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; D006046:Gold; C058667:cadmium selenide; C031238:zinc sulfide