Title :
Theoretical investigation of terahertz pulses generated from ultrafast photoconductive switches
Author :
Ma, Z. ; Ma, H. ; Yang, C. ; Feng, K.
Author_Institution :
Beijing Inst. of Radio Metrol. & Meas., Beijing, China
Abstract :
The technique of terahertz pulses generated from the photoconductive switches has been applied in the ultrafast electrical pulse metrology recently. A lumped-element theoretical model is established to describe the performance of the LT-GaAs ultrafast photoconductive switch used in the ultrafast pulse standard. Based on the model, waveforms and power spectrums of the generated terahertz pulses are calculated under 840 nm optical excitations. And comparisons between the theoretical results and the experimental results are carried out.
Keywords :
III-V semiconductors; electro-optical switches; gallium arsenide; microwave photonics; optical pulse generation; photoconducting switches; terahertz wave generation; GaAs; lumped-element theoretical model; optical excitation; power spectrums; terahertz pulse generation; ultrafast electrical pulse metrology; ultrafast photoconductive switches; wavelength 840 nm; Coplanar waveguides; Equations; Mathematical model; Optical pulses; Optical switches; Substrates; Ultrafast optics;
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5606923
