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arXiv 1101.4499physics.optics
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GHz频率的波长尺寸GaAs光机械谐振器

Wavelength-sized GaAs optomechanical resonators with GHz frequency

Lu Ding, Christophe Baker, Pascale Senellart, Aristide Lemaitre, Sara Ducci, Giuseppe Leo, Ivan Favero

摘要:

我们报告波长大小的GaAs光机械盘谐振器显示超强的光机械相互作用。我们观察到的光盘机械呼吸模式与1.4 GHz的频率和有效质量的~ 2 pg的光学转导。测量的真空光机耦合率达到0.8 MHz,与相关的差分光机耦合因子为485 GHz/nm。在室温和常压下,圆盘布朗运动的光学分辨灵敏度为10-17 m/{ \sqrt }Hz。

英文摘要:

We report on wavelength-sized GaAs optomechanical disk resonators showing ultra-strong optomechanical interaction. We observe optical transduction of a disk mechanical breathing mode with 1.4 GHz frequency and effective mass of ~ 2 pg. The measured vacuum optomechanical coupling rate reaches 0.8 MHz, with a related differential optomechanical coupling factor of 485 GHz/nm. The disk Brownian motion is optically resolved with a sensitivity of 10-17 m/{\sqrt}Hz at room temperature and pressure.

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