ELECTROOPTIC SAMPLING OF LOW TEMPERATURE GAAS PULSE GENERATORS FOR OSCILLOSCOPE CALIBRATION

Smith AJA.; Henderson D.; Roddie AG.

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ELECTROOPTIC SAMPLING OF LOW TEMPERATURE GAAS PULSE GENERATORS FOR OSCILLOSCOPE CALIBRATION

机译：ELECTROOPTIC SAMPLING OF LOW TEMPERATURE GAAS PULSE GENERATORS FOR OSCILLOSCOPE CALIBRATION

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Optoelectronic generation of well characterized ultrashort electrical pulses plays an important role in the calibration of fast-sampling oscilloscopes. In this paper the authors describe the National Physical Laboratory (NPL) pulse generator, comprising a femtosecond laser and an ultrafast photoconductive switch which can generate electrical pulses as short as 650 fs. The photoconductive switch consists of a GaAs substrate with a top GaAs layer grown under low temperature conditions to ensure a subpicosecond recombination rate. The technique of electrooptic sampling is used to measure pulses on planar transmission lines, such as coplanar waveguide and coplanar stripline. Good agreement is shown between electrooptic sampling measurement and the modelling of pulse propagation along a coplanar waveguide, enabling one to optimize a design of a calibration test source. The use of a pulse generator to calibrate a 50 GHz sampling oscilloscope is described. [References: 24]

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《Optical and Quantum Electronics》 |1996年第7期|933-943|共11页
作者
Smith AJA.; Henderson D.; Roddie AG.;
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作者单位

NATL PHYS LAB CTR ELECTROMAGNET & TIME METROL TEDDINGTON TW11 0LW MIDDX ENGLAND;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学;
关键词
Coplanar transmission-lines; Dispersion characteristics; Microstrip lines; Propagation; Striplines;

ELECTROOPTIC SAMPLING OF LOW TEMPERATURE GAAS PULSE GENERATORS FOR OSCILLOSCOPE CALIBRATION

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