Doppler Cooling a Microsphere
Doppler Cooling a Microsphere
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DOI：
10.1103/physrevlett.105.073002
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发表时间：
2010-08-11
影响因子：
8.6
通讯作者：
Barker, P. F.
中科院分区：
文献类型：
--
作者：
Barker, P. F.
描述了利用窄回音壁模式共振产生的速度依赖性散射力对光悬浮微球质心运动进行多普勒冷却。从回音壁模式共振中失谐的红光可以用来阻尼质心运动，其过程类似于原子的多普勒冷却。散射力不受饱和度的限制，但可以由入射功率控制。冷却时间的顺序秒计算为20 μ m直径的二氧化硅微球内捕获的光镊。
Doppler cooling the center-of-mass motion of an optically levitated microsphere via the velocity-dependent scattering force from narrow whispering gallery mode resonances is described. Light that is red detuned from the whispering gallery mode resonance can be used to damp the center-of-mass motion in a process analogous to the Doppler cooling of atoms. The scattering force is not limited by saturation but can be controlled by the incident power. Cooling times on the order of seconds are calculated for a 20 mu m diameter silica microsphere trapped within optical tweezers.