Microfabricated scanning near-field probe for sub-terahertz spectroscopy

摘要：

This paper reports design, fabrication and evaluation of a novel scanning near-field probe for terahertz (THz) local time domain spectroscopy (THz-TDS). A microfabricated scanning near-field optical microscopy (SNOM) probe was assembled with a low-temperature-grown gallium arsenide (LT-GaAs) photoconductive antenna. The probe structure was evaluated and determined by a finite-difference time-domain (FDTD) numerical simulation. The assembly was used as the THz emitter and local THz source. Another LT-GaAs antenna situated at the opposite side was used as the detector. A THz-TDS measurement using the microfabricated SNOM probe and photoconductive antenna was performed.

关键词： Microelectromechanical Systems (MEMS) Terahertz Scanning Near-Field Optical Microscopy Terahertz Time-domain Spectroscopy Gallium arsenide finite-difference time-domain method

作者: Kentaro Iwami Takahito Ono Masayoshi Esashi

作者单位: Division of Advanced Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Department of Nanomechanics, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ku,Sendai, Japan 980-8 Advanced Institute of Materials Research, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ku, Senda

会议类型: 国际会议

会议名称: 第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology

会议地点: 沈阳

会议语种:英文

页码: 1-6

在线出版日期: 2008-09-15（万方平台首次上网日期，不代表论文的发表时间）