arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.01788physics.opticscond-mat.mes-hallquant-ph
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单晶金刚石纳米束波导光力学

Single crystal diamond nanobeam waveguide optomechanics

Behzad Khanaliloo, Harishankar Jayakumar, Aaron C. Hryciw, David P. Lake, Hamidreza Kaviani, Paul E. Barclay

摘要:

光机械装置灵敏地利用光来激发和致动纳米机械结构的运动。单晶金刚石有望提高光机械器件的性能,同时也为纳米机械与金刚石色心自旋和相关量子技术的接口提供了机会。在这里,我们展示了耗散波导-光机耦合超过35 GHz/nm的金刚石纳米梁支持光波导模式和机械谐振,并使用这种光机耦合测量纳米梁位移的灵敏度$9.5$ FM/ $\sqrt{\text{Hz}}$和光学带宽$>150$ nm。纳米梁是由体光学级单晶金刚石使用可扩展的底切蚀刻工艺制造的,并且在室温下支持具有品质因子$2.5 \times 10^5$的机械共振,并且在低温条件(5 K)下支持具有品质因子$7.2 \times 10^5$的机械共振。机械自振荡,光热效应和光学机械效应之间的相互作用,观察到超过200 nm的振幅为子$μ$ W吸收的光功率,表现出潜在的光学机械激发和操纵的金刚石纳米机械结构。

英文摘要:

Optomechanical devices sensitively transduce and actuate motion of nanomechanical structures using light. Single--crystal diamond promises to improve the performance of optomechanical devices, while also providing opportunities to interface nanomechanics with diamond color center spins and related quantum technologies. Here we demonstrate dissipative waveguide--optomechanical coupling exceeding 35 GHz/nm to diamond nanobeams supporting both optical waveguide modes and mechanical resonances, and use this optomechanical coupling to measure nanobeam displacement with a sensitivity of $9.5$ fm/$\sqrt{\text{Hz}}$ and optical bandwidth $>150$nm. The nanobeams are fabricated from bulk optical grade single--crystal diamond using a scalable undercut etching process, and support mechanical resonances with quality factor $2.5 \times 10^5$ at room temperature, and $7.2 \times 10^5$ in cryogenic conditions (5K). Mechanical self--oscillations, resulting from interplay between photothermal and optomechanical effects, are observed with amplitude exceeding 200 nm for sub-$μ$W absorbed optical power, demonstrating the potential for optomechanical excitation and manipulation of diamond nanomechanical structures.

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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