Title :
Efficient THz-emitters for low-temperature-grown GaAs photomixers
Author :
Sydlo, C. ; Sigmund, J. ; Hartnagel, H.L. ; Loata, G. ; Siebert, K.J. ; Roskos, H.G.
Author_Institution :
Inst. of Microwave Eng., Darmstadt Univ. of Technol., Germany
Abstract :
Different design techniques have been applied to low-temperature grown (LT-) GaAs photomixers and the respective antennas to increase the efficiency and output power of these devices. High DC-photocurrents have been achieved with interdigitated structures and transmission lines have been used to improve matching between antenna and photomixer. The input impedances of antenna structures on GaAs substrate have been investigated and optimised for matching and technological feasibility.
Keywords :
III-V semiconductors; gallium arsenide; microwave photonics; photoresistors; submillimetre wave generation; DC-photocurrents; GaAs; antenna structures; efficiency; input impedances; interdigitated structures; low-temperature-grown materials; output power; photomixers; photoresistor; terahertz emitters; Biomembranes; Conductivity; Fingers; Gallium arsenide; Impedance; Molecular beam epitaxial growth; Photoconductivity; Power transmission lines; Substrates; Voltage;
Conference_Titel :
Terahertz Electronics Proceedings, 2002. IEEE Tenth International Conference on
Print_ISBN :
0-7803-7630-7
DOI :
10.1109/THZ.2002.1037589
