Plasmon Enhanced Optical Near-field Probing of Metal Nanoaperture Surface Emitting Laser.
Plasmon Enhanced Optical Near-field Probing of Metal Nanoaperture Surface Emitting Laser.
复制标题
DOI：
10.1364/opex.12.006391
复制
发表时间：
2004-12
期刊：
影响因子：
3.8
通讯作者：
J. Hashizume;F. Koyama
中科院分区：
文献类型：
--
作者：
J. Hashizume;F. Koyama
我们展示了一种用于亚波长光学近场探测的金属纳米孔径砷化镓垂直腔表面发射激光器（VCSEL），它通过在纳米孔径中形成金属纳米粒子，表现出光学近场和电压信号的强等离子体增强。阈值电流低至300μA，展现出低功耗纳米探测的潜力。我们首次演示了等离激元增强型 VCSEL 近场探针。孔径为 400 nm 和 200 nm 的 VCSEL 探针的空间分辨率分别为 240 nm 和 130 nm。 Au粒子的光学近场和电压信号的增强因子分别为1.8和2。我们的 FDTD 模拟表明，具有 Au 粒子的局域等离激元对于增加 VCSEL 纳米探测中的光学近场强度和信号电压非常有帮助。
We demonstrate a metal nano-aperture GaAs vertical cavity surface emitting laser (VCSEL) for sub-wavelength optical near-filed probing, which exhibits the strong plasmon enhancement of both optical near-fields and voltage signals with forming a metal nano-particle in the nano-aperture. The threshold current is as low as 300microA, which shows a potential of nano-probing with low power consumption. We achieved the first demonstration of a plasmon enhanced VCSEL near-field probe. The spatial resolutions of the VCSEL probe with 400 nm and 200 nm apertures are 240nm and 130 nm, respectively. The enhancement factors of the optical near-field and voltage signal with a Au particle are 1.8 and 2, respectively. Our FDTD simulation shows that localized plasmon with a Au particle is very helpful for increasing optical near-field intensity and signal voltage in the VCSEL nano-probing.