| Original Articles |
|
|
|
|
Nonresonant Optical Nonlinearities of Surface Chemically Modified ZnO Composite Nanoparticles |
| WANG Rong-yao;WU Xiao-chun;ZOU Bing-suo;WANG Li;WU Peng-fei;LIU Shao-mei;WANG Jin-guo;XU Ji-ren |
| Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 |
|
| Cite this article: |
|
WANG Rong-yao, WU Xiao-chun, ZOU Bing-suo et al 1998 Chin. Phys. Lett. 15 27-29 |
|
|
|
|
Abstract With surface chemical modification, we have obtained core-shell structure ZnO nanoparticles. The nonresonant third-order nonlinear optical refraction of this new composite material was found to be -3.8 x 10-l0 esu by Z-scan measurements with a femtosecond pulsed laser. The ultrafast nonlinear response time ~250 fs measured by time-resolved pump-probe techniques suggests that the nonlinearity of this new material originates mainly from a rapid electronic polarization process or virtual process such as the optical Stark effect.
|
| Keywords:
42.65.An
42.70.Nq
|
|
|
Published: 01 January 1998
|
|
| PACS: |
42.65.An
|
(Optical susceptibility, hyperpolarizability)
|
| |
42.70.Nq
|
(Other nonlinear optical materials; photorefractive and semiconductor materials)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
