Terahertz pulsed imaging with 1.06 μm laser excitation
- 17 November 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (20) , 4113-4115
- https://doi.org/10.1063/1.1627485
Abstract
We report the operation of a pulsed terahertz (THz) imaging system that uses a 120 fs pulse-width laser operating at 1.06 μm, and photoconductive InGaAs emitters and detectors. THz images are presented of biological and nonbiological specimens. The signal-to-noise ratio and frequency range of this system are compared to those obtained from existing pulsed imaging systems based on 0.8 μm excitation.Keywords
This publication has 13 references indexed in Scilit:
- High-performance continuous-wave operation of superlattice terahertz quantum-cascade lasersApplied Physics Letters, 2003
- Terahertz Pulse Imaging of ex vivo Basal Cell CarcinomaJournal of Investigative Dermatology, 2003
- Terahertz semiconductor-heterostructure laserNature, 2002
- Dependence of the carrier lifetime on acceptor concentration in GaAs grown at low-temperature under different growth and annealing conditionsJournal of Applied Physics, 2000
- Generation and field-resolved detection of femtosecond electromagnetic pulses tunable up to 41 THzApplied Physics Letters, 2000
- Highly tunable fiber-coupled photomixers with coherent terahertz output powerIEEE Transactions on Microwave Theory and Techniques, 1997
- Chemistry is right for T-ray imagingIEEE Circuits and Devices Magazine, 1996
- Ultrafast carrier dynamics in III-V semiconductors grown by molecular-beam epitaxy at very low substrate temperaturesIEEE Journal of Quantum Electronics, 1992
- Terahertz radiation induced by subband-gap femtosecond optical excitation of GaAsPhysical Review Letters, 1991
- Picosecond optoelectronic switching and gating in siliconApplied Physics Letters, 1975