Terahertz radiation from heavy-ion-irradiated In0.53Ga0.47As photoconductive antenna excited at 1.55μm
- 4 November 2005
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (19)
- https://doi.org/10.1063/1.2126110
Abstract
We investigate terahertz (THz) emission from heavy-ion-irradiated In0.53Ga0.47As photoconductive antennas excited at 1550 nm. The carrier lifetime in the highly irradiated In0.53Ga0.47As layer is less than 200 fs, the steady-state mobility is 490 cm2 V–1 s–1, and the dark resistivity is 3 Omega cm. The spectrum of the electric field radiating from the Br+-irradiated In0.53Ga0.47As antenna extends beyond 2 THz. The THz electric field magnitude is shown to saturate at high optical pump fluence, and the saturation fluence level increases with the irradiation dose, indicating that defect center scattering has a significant contribution to the transient mobilityKeywords
This publication has 9 references indexed in Scilit:
- Ultrafast response (∼2.2 ps) of ion-irradiated InGaAs photoconductive switch at 1.55 μmApplied Physics Letters, 2003
- Photomixing and photoconductor measurements on ErAs/InGaAs at 1.55 μmApplied Physics Letters, 2003
- Generation and detection of terahertz pulsed radiation with photoconductive antennas and its application to imagingMeasurement Science and Technology, 2002
- Material properties of Ga0.47In0.53As grown on InP by low-temperature molecular beam epitaxyApplied Physics Letters, 1992
- Saturation properties of large-aperture photoconducting antennasIEEE Journal of Quantum Electronics, 1992
- Practical low voltage 2×2 polarisation independent LiNbO 3 digital optical switchElectronics Letters, 1991
- Picosecond lifetime measurement in semiconductor by optoelectronic autocorrelationElectronics Letters, 1991
- Direct Subpicosecond Measurement of Carrier Mobility of Photoexcited Electrons in Gallium ArsenidePhysical Review Letters, 1987
- A Monte Carlo computer program for the transport of energetic ions in amorphous targetsNuclear Instruments and Methods, 1980