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arXiv 0810.2748physics.optics
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近红外亚波长微盘激光器

Near-IR Subwavelength Microdisk Lasers

Q. Song, H. Cao, S. T. Ho, G. S. Solomon

摘要:

本文报道了亚波长GaAs介质在光抽运下的单模激射。该磁盘是由标准的光刻和两个步骤的湿化学蚀刻。这种简单的制备方法可以制备出圆度好、边界光滑、侧壁垂直的亚微米圆片。最小的激光盘直径为627 nm,厚度为265 nm。圆盘直径与真空激射波长的比值约为0.7。数值模拟结果表明,激光模式为回音壁模式,其方位角数仅为4,模式体积很小。

英文摘要:

We report single-mode lasing in subwavelength GaAs disks under optical pumping. The disks are fabricated by standard photolithography and two steps of wet chemical etching. The simple fabrication method can produce submicron disks with good circularity, smooth boundary and vertical sidewalls. The smallest lasing disks have a diameter of 627 nm and thickness of 265 nm. The ratio of the disk diameter to the vacuum lasing wavelength is about 0.7. Our numerical simulations confirm that the lasing modes are whispering-gallery modes with the azimuthal number as small as 4 and very small mode volume.

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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