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arXiv 1201.0964physics.optics
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电驱动光子晶体纳米腔器件

Electrically driven photonic crystal nanocavity devices

Gary Shambat, Bryan Ellis, Jan Petykiewicz, Marie A. Mayer, Arka Majumdar, Tomas Sarmiento, James Harris, Eugene E. Haller, Jelena Vuckovic

摘要:

光子晶体纳米腔的兴趣是由器件性能的进步,特别是在低阈值激光源的发展。高性能光子晶体激光器的有效电控制由于与电流注入到腔中相关联的复杂性而至今仍然是难以捉摸的。提出了一种利用横向p-i-n结实现电泵浦光子晶体薄膜器件的制备方法。我们已经证明了电泵浦激光在我们的交界处的阈值为181 nA在50 K-有史以来最低的阈值证明在电泵浦激光器。在室温下,我们发现我们的器件表现为单模发光二极管(LED),当直接调制时,具有高达10 GHz的超快电响应,对应于低于1 fJ/bit的能量操作-这是任何光发射器的最低值。此外,我们还演示了光子晶体纳米束LED的电泵浦,并构建了光纤锥形耦合电光调制器。基于双光子吸收的光纤耦合光电探测器也被证明,以及多个集成的组件,可以独立地电气控制。电注入平台是一个重要的一步,在提供实用的低功耗和可集成的器件的片上光子学。

英文摘要:

Interest in photonic crystal nanocavities is fueled by advances in device performance, particularly in the development of low-threshold laser sources. Effective electrical control of high performance photonic crystal lasers has thus far remained elusive due to the complexities associated with current injection into cavities. A fabrication procedure for electrically pumping photonic crystal membrane devices using a lateral p-i-n junction has been developed and is described in this work. We have demonstrated electrically pumped lasing in our junctions with a threshold of 181 nA at 50K - the lowest threshold ever demonstrated in an electrically pumped laser. At room temperature we find that our devices behave as single-mode light-emitting diodes (LEDs), which when directly modulated, have an ultrafast electrical response up to 10 GHz corresponding to less than 1 fJ/bit energy operation - the lowest for any optical transmitter. In addition, we have demonstrated electrical pumping of photonic crystal nanobeam LEDs, and have built fiber taper coupled electro-optic modulators. Fiber-coupled photodetectors based on two-photon absorption are also demonstrated as well as multiply integrated components that can be independently electrically controlled. The presented electrical injection platform is a major step forward in providing practical low power and integrable devices for on-chip photonics.

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