Terahertz imaging with quantum cascade lasers
Milliwatt average power terahertz quantum cascade lasers (THz-QCLs) combined with microbolometer focal plane array cameras allow for acquisition rates on the order of 1106pixels/s. This system enables real-time imaging in transmission and reflection modes with signal to noise ratios of 25 dB per pix...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
SPIE
2018
|
| Online Access: | http://hdl.handle.net/1721.1/114213 https://orcid.org/0000-0003-1982-4053 |
| Summary: | Milliwatt average power terahertz quantum cascade lasers (THz-QCLs) combined with microbolometer focal plane array cameras allow for acquisition rates on the order of 1106pixels/s. This system enables real-time imaging in transmission and reflection modes with signal to noise ratios of 25 dB per pixel. While these system allow rapid imaging for fairly transparent samples, signal to noise ratios of 90 dB can be achieved with single element detectors where the samples are more opaque or require higher SNR. Systems using LongWave's terahertz QCLs and single/multi-element detectors will be presented. 2016 SPIE. Keywords: terahertz quantum cascade laser, spectroscopy, heterodyne |
|---|