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arXiv 1407.7086cond-mat.mes-hall
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利用单个碳纳米管产生门控光脉冲序列

Gate-controlled generation of optical pulse trains using individual carbon nanotubes

M. Jiang, Y. Kumamoto, A. Ishii, M. Yoshida, T. Shimada, Y. K. Kato

摘要:

我们报告的光脉冲序列的产生下,从个人的空气悬浮碳纳米管的应用程序的方波门电压。静电诱导的载流子激发会淬灭光致发光,而电压符号反转则会清除这些载流子,使纳米管暂时重新发光。频域测量揭示了光致发光的恢复与特征频率,随着激发激光功率的增加,示出了光激发载流子淬灭在一个自限制的方式发射。时间分辨的测量直接确认同步到栅极电压信号的光脉冲训练的存在,并且证明了对脉冲定时和持续时间的灵活控制。

英文摘要:

We report on optical pulse-train generation from individual air-suspended carbon nanotubes under an application of square-wave gate voltages. Electrostatically-induced carrier accummulation quenches photoluminescence, while a voltage sign reversal purges those carriers, resetting the nanotubes to become luminescent temporarily. Frequency domain measurements reveal photoluminescence recovery with characteristic frequencies that increase with excitation laser power, showing that photoexcited carriers quench the emission in a self-limiting manner. Time-resolved measurements directly confirm the presence of an optical pulse train sychronized to the gate voltage signal, and flexible control over pulse timing and duration is demonstrated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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