The excited-state absorption and third-order optical nonlinearity from 1-dodecanethiol protected gold nanoparticles: Application for optical limiting
✍ Scribed by Chuanlang Zhan; Dehua Li; Deqing Zhang; Wei Xu; Yuxin Nie; Daoben Zhu
- Book ID
- 103875929
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 317 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0925-3467
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✦ Synopsis
Few studies have been carried out on near-IR picosecond optical nonlinearity and excited-state absorption of stable gold nanoparticles. In this article, the near-IR picosecond optical nonlinearity from 1-dodecanethiol protected gold nanoparticles (Nano-1) was investigated by using Z-scan technique. The incident laser is a Q-switched/mode-locked Nd:YAG pulses laser with a duration of 35 ps at 1064 nm. The experimental results indicate that Nano-1 solution in tetrahydrofuran (THF) shows high excited-state absorption and a negative third-order refraction index. Due to this high excited-state absorption, a highly effective optical limiting behavior was observed for Nano-1 in THF solution in solution with a low optical limiting threshold.