期刊
OPTICS EXPRESS
卷 27, 期 7, 页码 10221-10233出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.010221
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资金
- Australian Research Council Discovery Project [DP160103910]
- Engineering and Physical Sciences Research Council (EPSRC), UK [EP/P021859/1]
- European Cooperation in Science and Technology (COST) [BM1205]
- Queensland Government's Advance Queensland Program
- Royal Society
- Wolfson Foundation
- EPSRC [EP/P021859/1, EP/J002356/1, EP/P022464/1, EP/S019367/1] Funding Source: UKRI
- MRC [MC_PC_14109] Funding Source: UKRI
We report a coherent terahertz (THz) imaging system that utilises a quantum cascade laser (QCL) operating in pulsed-mode as both the source and detector. The realisation of a short-pulsed THz QCL feedback interferometer permits both high peak powers and improved thermal efficiency, which enables the cryogen-free operation of the system. In this work, we demonstrated pulsed-mode swept-frequency laser feedback interferometry experimentally. Our interferometric detection scheme not only permits the simultaneous creation of both amplitude and phase images, but inherently suppresses unwanted background radiation. We demonstrate that the proposed system utilising microsecond pulses has the potential to achieve 0.25 mega-pixel per second acquisition rates, paving the pathway to video frame rate THz imaging. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
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