Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon

JIANG Xiao-fang; LI Xiao-long; CAO Jun-feng; ZHAO Feng-hua; GUO Meng-zu; FU Xiong-hui; QIU

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Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon

paper | 更新时间：2020-08-12

- Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon
- Chinese Journal of Luminescence Vol. 31, Issue 1, Pages: 109-113(2010)
- 作者机构：
  
  1. 中山大学光电材料与技术国家重点实验室,广东广州,510275
  2. 中山大学化学与化工学院,广东广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：10 September 2009，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2010，
  
  Published：20 February 2010
- 稿件说明：
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JIANG Xiao-fang, LI Xiao-long, CAO Jun-feng, et al. Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon[J]. Chinese journal of luminescence, 2010, 31(1): 109-113.
DOI：

JIANG Xiao-fang, LI Xiao-long, CAO Jun-feng, et al. Stimulated Emission Property of Novel ZnO Nanoneedle Pumped by Two-photon[J]. Chinese journal of luminescence, 2010, 31(1): 109-113. DOI：

摘要

室温下采用640 nm的飞秒脉冲激光泵浦ZnO纳米针得到双光子诱导的光致发光谱。结合单光子下的研究结果

实验分析了双光子泵浦下样品随着受激能量增强产生的三种紫外发射行为并归结为自由激子自发辐射

激子-激子散射和电子空穴等离子体复合。双光子泵浦下ZnO纳米针的受激阈值是4.82 GW/cm

远小于其他ZnO微纳材料的双光子阈值(TW/cm

)。结果表明:这种新型的ZnO纳米针结构能更有效地产生双光子激射

这在纳米激光器方面将会有很大的应用前景。

Abstract

Stimulated emissions in a novel nanoneedle ZnO composite with two complex needle parts were investigated using the two-photon induced time-resolved photoluminescence pumped with the femtosecond pulse at the wavelength of 640 nm in room temperature. Comparing with the results of single-photon pumped

we observe three operation mechanisms of two-photon induced UV emission behaviors with the excitation power increasing:spontaneous emission of free-exciton

exciton-exciton(E-E) scattering and electron-hole-plasma (EHP) recombination. The threshold of two-photon excitation emission is 4.82 GW/cm

which is far lower than that of mirconeedle ZnO reported recently and the other nanostructure of ZnO(TW/cm

).Our research results proved that the new ZnO nanoneedle structure with UV emission efficiently induced two-photon shows great potential applications in the two-photon induced nanolasers fields.

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references

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