Title :
Mesa structured photoconductive antennas for 1.5 µm: All-fibre THz-TDS spectroscopy beyond 4 THz
Author :
Dietz, R.J.B. ; Roehle, H. ; Stanze, D. ; Montanaro, V. ; Hensel, H.J. ; Schell, M. ; Sartorius, B.
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst., Berlin, Germany
Abstract :
Photoconductive antennas (PCAs) based on InGaAs/InAlAs for operation at 1.5 μm are improved by employing special structuring techniques, i.e. mesa etching. The detected THz amplitude is increased by a factor of over 27. The spectra show a significantly increased bandwidth exceeding 4 THz.
Keywords :
aluminium compounds; gallium arsenide; indium compounds; submillimetre wave antennas; terahertz spectroscopy; InGaAs-InAlAs; THz amplitude detection; all-fibre THz-TDS spectroscopy; mesa etching; mesa structured photoconductive antennas; special structuring technique; wavelength 1.5 mum; Absorption; Antenna measurements; Antennas; Indium gallium arsenide; Optical fibers;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612633
