a Institute of Modern Optics, Nankai University, Tianjin 300071, China; b Xi'an Institute of Optics and fine Mechanics, Academia Sinica, Xi'an 710068, China
Abstract We have measured the third-order nonlinear susceptibilities (3) of SnO2 nanoparticles both naked and coated with a layer of stearic acid by using Z-scan technique with 1.06μm pulse from a Q-switched Nd:YAG laser. The results show that the (3) of these nanoparticles is much larger than that of the bulk material. Moreover, we find that two-photon absorption is not present for the naked nanoparticles but it is preseut for the coated ones, and the (3) of the latter is larger than that of the former. It is demonstrated that the surface situations of the nanoparticles have great influence on their nonlinear optical properties.
Received: 09 December 1994
Revised: 25 September 1995
Accepted manuscript online:
Fund: Project supported by the Climbing Programme-Chinese Nationed Key Project for Fundamental Research and State Key Laboratory of Transient Optical Technique. Xi'an Institute of Optics and Fine Mechanics, Academia Sinica, China.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
