Small-signal modulation characteristics of a polariton laser.
Small-signal modulation characteristics of a polariton laser.
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DOI：
10.1038/srep11915
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发表时间：
2015-07-08
影响因子：
4.6
通讯作者：
Bhattacharya P
中科院分区：
文献类型：
--
作者：
Baten MZ;Frost T;Iorsh I;Deshpande S;Kavokin A;Bhattacharya P
大带隙材料与电注入一起的使用使得偏振激元激光器成为用于医学和生物医学应用或短波长（紫和紫外）的短距离塑料光纤通信的有吸引力的低功率相干光源，其中常规激光器难以实现。极化激元激光器的动力学特性还没有在实验上研究过。首次测量了室温下GaN基电泵浦偏振激元激光器的小信号调制特性。最大−3 dB调制带宽为1.18 GHz。用基于Boltzmann动力学方程的理论模型对实验结果进行了分析，符合得很好。我们还研究了在这种调制过程中的频率啁啾。本文解释了偏振激元激光器中的增益压缩现象，并给出了增益压缩因子的数值。
Use of large bandgap materials together with electrical injection makes the polariton laser an attractive low-power coherent light source for medical and biomedical applications or short distance plastic fiber communication at short wavelengths (violet and ultra-violet), where a conventional laser is difficult to realize. The dynamic properties of a polariton laser have not been investigated experimentally. We have measured, for the first time, the small signal modulation characteristics of a GaN-based electrically pumped polariton laser operating at room temperature. A maximum −3 dB modulation bandwidth of 1.18 GHz is measured. The experimental results have been analyzed with a theoretical model based on the Boltzmann kinetic equations and the agreement is very good. We have also investigated frequency chirping during such modulation. Gain compression phenomenon in a polariton laser is interpreted and a value is obtained for the gain compression factor.
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影响因子：
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作者：
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通讯作者：
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通讯作者：
HOPFIELD, JJ