基于开环振荡器阵列磁振荡效应的全光开关

SHOU Xiang; GAN Ben-xin; SU Hong-yan; BAI Lu-guang

基于开环振荡器阵列磁振荡效应的全光开关

1.
Cao Group,Salt Lake City,USA;
2.
Huai'an College of Information Technology,Huai'an 223003,China

详细信息

中图分类号: TB34; TN15
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出版历程
- 收稿日期: 2010-03-15
- 修回日期: 2010-05-13
- 刊出日期: 2010-08-25

Optical switching based on magnetic resonance of split ring resonator array

1.
Cao Group,Salt Lake City,USA;
2.
Huai'an College of Information Technology,Huai'an 223003,China

摘要

摘要: We demonstrate an all-optical switching of the magnetic resonance properties associated with a metallic Split Ring Resonator(SRR) array. The periodically spaced elements are fabricated on a high-resistivity silicon wafer and probed by using conventional Terahertz(THz) time-domain spectroscopy. We use a continuous-wave laser diode to generate carriers in the gaps of the SRR elements. Using a sufficient power, this optical excitation can create an effective short gap, which would switch the resonant properties of the metamaterial from that of an SRR array to that of a closed ring resonator array and leads to dramatic changes in the THz transmission. In the present experiment, the optically induced switching is associated with the magnetic resonance. However, with appropriate changes in the device structure, this approach can be extended to switch a medium with a negative real index of refraction to a medium with a positive real index of refraction. This opens the way to creat a broad new range of active devices.
- optical switching /
- magnetic resonance /
- ring resonator array
Abstract: We demonstrate an all-optical switching of the magnetic resonance properties associated with a metallic Split Ring Resonator(SRR) array. The periodically spaced elements are fabricated on a high-resistivity silicon wafer and probed by using conventional Terahertz(THz) time-domain spectroscopy. We use a continuous-wave laser diode to generate carriers in the gaps of the SRR elements. Using a sufficient power, this optical excitation can create an effective short gap, which would switch the resonant properties of the metamaterial from that of an SRR array to that of a closed ring resonator array and leads to dramatic changes in the THz transmission. In the present experiment, the optically induced switching is associated with the magnetic resonance. However, with appropriate changes in the device structure, this approach can be extended to switch a medium with a negative real index of refraction to a medium with a positive real index of refraction. This opens the way to creat a broad new range of active devices.
- optical switching /
- magnetic resonance /
- ring resonator array

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参考文献(1)

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