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arXiv 0809.2339physics.opticsphysics.atom-ph
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平面波在微加工球面镜上的紧聚焦

Tight focusing of plane waves from micro-fabricated spherical mirrors

J. Goldwin, E. A. Hinds

摘要:

本文导出了单色平面波经球面镜截断反射后的光场公式。我们的公式是有效的,即使是深镜,孔径半径接近的曲率半径。我们将这一结果应用到微加工的反射镜,其尺寸尺度在几十到几百个波长的范围内,并表明可以实现亚波长的光斑尺寸。这开辟了可扩展的阵列的紧密聚焦的光偶极子陷阱,而不需要高性能的光学系统的可能性。

英文摘要:

We derive a formula for the light field of a monochromatic plane wave that is truncated and reflected by a spherical mirror. Our formula is valid even for deep mirrors, where the aperture radius approaches the radius of curvature. We apply this result to micro-fabricated mirrors whose size scales are in the range of tens to hundreds of wavelengths, and show that sub-wavelength spot sizes can be achieved. This opens up the possibility of scalable arrays of tightly focused optical dipole traps without the need for high-performance optical systems.

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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