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arXiv 0907.5212quant-ph
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可调谐二能级光子分子中的声子laser action

Phonon laser action in a tunable, two-level photonic molecule

Ivan S. Grudinin, O. Painter, Kerry J. Vahala

摘要:

光学激光的声子模拟一直是人们感兴趣的课题。我们展示了一个复合微腔系统,耦合到一个射频机械模式,在密切类似的两个级别的激光系统的操作。反转产生增益,导致声子激光作用高于约50 $μ$ W的泵浦功率阈值。该器件具有连续可调的增益谱,可选择性地放大从射频到微波速率的机械模式。被视为布里渊过程,该系统访问的制度,其中声子发挥传统上是斯托克斯波的作用。出于这个原因,还应该可以在声子和光子激光状态之间可控地切换。机械模式的冷却也是可能的。

英文摘要:

The phonon analog of an optical laser has long been a subject of interest. We demonstrate a compound microcavity system, coupled to a radio-frequency mechanical mode, that operates in close analogy to a two-level laser system. An inversion produces gain, causing phonon laser action above a pump power threshold of around 50 $μ$W. The device features a continuously tunable, gain spectrum to selectively amplify mechanical modes from radio frequency to microwave rates. Viewed as a Brillouin process, the system accesses a regime in which the phonon plays what has traditionally been the role of the Stokes wave. For this reason, it should also be possible to controllably switch between phonon and photon laser regimes. Cooling of the mechanical mode is also possible.

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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