Abstract
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.
| Original language | English |
|---|---|
| Article number | 713313 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 7133 |
| DOIs | |
| Publication status | Published - 2009 |
| Event | 5th International Symposium on Instrumentation Science and Technology - Shenyang, China Duration: 2009 Sep 15 → 2009 Sep 18 |
Keywords
- Finite-difference time-domain method
- Gallium arsenide
- Microelectromechanical systems (MEMS)
- Scanning near-field optical microscopy
- Terahertz
- Terahertz time-domain spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering