標題: Characteristics of photogenerated bipolar terahertz radiation in biased photoconductive switches
作者: Lin, PI
Chen, SF
Wu, KH
Juang, JY
Uhn, TM
Gou, YS
電子物理學系
Department of Electrophysics
關鍵字: THz radiation;bipolar;photoconductive switches;free-space electrooptic sampling;ultrafast laser pulse illumination
公開日期: 15-十月-2002
摘要: The characteristics of the optically induced bipolar terahertz (THz) radiation from biased semi-insulating GaAs photoconductive switches were investigated using a free-space electrooptic sampling technique, The emitted radiation shows a nearly symmetrical waveform with a broad-band frequency spectrum spanning over 0.1-3 THz, which displays essentially no dependence on the optical excitation fluence or strength of biased field. However, it does slightly depend on the file emitter gap spacing. The dynamics of the emitted THz transient is in agreement with the optically induced ultrafast charge transport process driven by the biased field.
URI: http://dx.doi.org/10.1143/JJAP.41.L1158
http://hdl.handle.net/11536/28449
ISSN: 0021-4922
DOI: 10.1143/JJAP.41.L1158
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume: 41
Issue: 10B
起始頁: L1158
結束頁: L1160
顯示於類別:期刊論文


文件中的檔案:

  1. 000179893900010.pdf