Journal
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
Volume 33, Issue 4, Pages 393-404Publisher
SPRINGER
DOI: 10.1007/s10762-012-9882-1
Keywords
Terahertz; Photoconductive antenna; Low-temperature-grown GaAs; 1.55-mu m femtosecond laser; InSb; Lens coupling; Magnetic field enhancement
Funding
- Development of Systems and Technology for Advanced Measurement and Analysis
- Japan Science and Technology Agency (JST)
- JST
- Grants-in-Aid for Scientific Research [22109003] Funding Source: KAKEN
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Recent studies on the techniques and development of photoconductive (PC) semiconductor devices for efficient generation and detection of terahertz (THz) pulsed radiation are reported. Firstly, the optimization of PC antenna design is discussed. The PC detection of THz pulsed radiation using low-temperature grown GaAs with 1.55-mu m wavelength probe is then described. Finally, the enhancement of THz radiation from InSb by using a coupling lens and magnetic field is investigated. These results reveal valuable insights on the design of an efficient, compact, and cost-effective THz time-domain spectroscopy system based on 1.55-mu m fs laser sources.
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