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arXiv 1502.07704physics.optics
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Laser光学机械

Laser Optomechanics

Weijian Yang, S. Adair Gerke, Kar Wei Ng, Yi Rao, Christopher Chase, Connie J. Chang-Hasnain

摘要:

腔光力学研究光场与机械振荡之间的耦合,以诱导机械振荡器中的冷却和再生振荡。到目前为止,光力学依赖于腔和外部泵浦激光器之间的失谐,其中激光器仅用作电源。在这里,我们报告了一个新的方案,支持一个垂直腔面发射激光器(VCSEL)的镜子和光场的机械振荡器之间的相互耦合,大大提高了光物质的能量转移。在这项工作中,我们在VCSEL中使用了超轻(130 pg)的高对比度光栅(HCG)镜,其反射率光谱被设计为促进强光机耦合,以证明激光光机腔的光机诱导再生振荡,微机械振荡器的自振荡幅度大于550 nm,比典型的大两到三个数量级。这一新方案不仅为实现高速波长扫描光源提供了一种有效途径,而且对实现宏观物体的量子纠缠以及位移和力的超灵敏测量具有深远意义。

英文摘要:

Cavity optomechanics explores the coupling between the optical field and the mechanical oscillation to induce cooling and regenerative oscillation in a mechanical oscillator. So far, optomechanics relies on the detuning between the cavity and an external pump laser, where the laser acts only as a power supply. Here, we report a new scheme with mutual coupling between a mechanical oscillator that supports a mirror of a vertical-cavity surface-emitting laser (VCSEL) and the optical field, greatly enhancing the light-matter energy transfer. In this work, we used an ultra-light-weight (130 pg) high-contrast-grating (HCG) mirror in a VCSEL, whose reflectivity spectrum is designed to facilitate strong optomechanical coupling, to demonstrate optomechanically-induced regenerative oscillation of the laser optomechanical cavity with > 550 nm self-oscillation amplitude of the micro-mechanical oscillator, two to three orders of magnitude larger than typical. This new scheme not only offers an efficient approach for high-speed wavelength-swept sources, but also has far-reaching significance in the realization of quantum entanglement of macroscopic objects and ultrasensitive measurement of displacements and forces.

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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