DocumentCode
1428866
Title
RF Frequency Response of Photoconductive Samplers
Author
Roux, Jean-François ; Delord, Jean-Marie ; Coutaz, Jean-Louis
Author_Institution
Lab. d´´Hyperfreq., Univ. de Savoie, Paris, France
Volume
47
Issue
2
fYear
2011
Firstpage
223
Lastpage
229
Abstract
We derive the microwave bandwidth of ultrafast optoelectronic samplers based on photoconducting switches, using a simple analytical model. The validity of this model is checked by measuring the bandwidth of semi-intrinsic and low-temperature-grown GaAs photoswitches. The bandwidth of such devices is limited by the response time of both the semiconductor material and the electrical circuit. The devices behave as low-pass filters exhibiting a -60 dB/decade slope.
Keywords
III-V semiconductors; electro-optical switches; gallium arsenide; high-speed optical techniques; low-pass filters; microwave photonics; GaAs; RF frequency response; low-pass filters; microwave bandwidth; photoconducting switches; photoconductive samplers; photoswitches; ultrafast optoelectronic samplers; Bandwidth; Laser excitation; Optical pulses; Optical switches; Radio frequency; Resistance; Time factors; Frequency response of optoelectronic devices; low-temperature-grown GaAs; photoconductive devices; sampling methods;
fLanguage
English
Journal_Title
Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/JQE.2010.2077672
Filename
5689402
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