Mechanisms of ultrafast laser-induced deep-subwavelength gratings on graphite and diamond
文献类型：期刊论文
| 作者 | Huang Min ; Zhao Fuli ; Cheng Y(程亚) ; Xu Ningsheg ; Xu ZZ(徐至展) |
| 刊名 | phys. rev. b
 |
| 出版日期 | 2009 |
| 卷号 | 79期号:12页码:125436 |
| 关键词 | diamond diffraction gratings excited states graphite high-speed optical techniques laser beam effects surface states |
| ISSN号 | 1098-0121 |
| 中文摘要 | deep-subwavelength gratings with periodicities of 170, 120, and 70 nm can be observed on highly oriented pyrolytic graphite irradiated by a femtosecond (fs) laser at 800 nm. under picosecond laser irradiation, such gratings likewise can be produced. interestingly, the 170-nm grating is also observed on single-crystal diamond irradiated by the 800-nm fs laser. in our opinion, the optical properties of the high-excited state of material surface play a key role for the formation of the deep-subwavelength gratings. the numerical simulations of the graphite deep-subwavelength grating at normal and high-excited states confirm that in the groove the light intensity can be extraordinarily enhanced via cavity-mode excitation in the condition of transverse-magnetic wave irradiation with near-ablation-threshold fluences. this field enhancement of polarization sensitiveness in deep-subwavelength apertures acts as an important feedback mechanism for the growth and polarization dependence of the deep-subwavelength gratings. in addition, we suggest that surface plasmons are responsible for the formation of seed deep-subwavelength apertures with a particular periodicity and the initial polarization dependence. finally, we propose that the nanoscale coulomb explosion occurring in the groove is responsible for the ultrafast nonthermal ablation mechanism. |
| 学科主题 | 激光技术;激光物理与基本理论 |
| 资助信息 | shanghai institute of optics and fine mechanics (siom) ; chinese academy of sciences (cas) |
| 语种 | 英语 |
| WOS记录号 | WOS:000264769300117 |
| 公开日期 | 2009-09-18 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/656]  |
| 专题 | 上海光学精密机械研究所_强场激光物理国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Huang Min,Zhao Fuli,Cheng Y,et al. Mechanisms of ultrafast laser-induced deep-subwavelength gratings on graphite and diamond[J]. phys. rev. b,2009,79(12):125436. |
| APA | Huang Min,Zhao Fuli,程亚,Xu Ningsheg,&徐至展.(2009).Mechanisms of ultrafast laser-induced deep-subwavelength gratings on graphite and diamond.phys. rev. b,79(12),125436. |
| MLA | Huang Min,et al."Mechanisms of ultrafast laser-induced deep-subwavelength gratings on graphite and diamond".phys. rev. b 79.12(2009):125436. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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