1. Real-time reflection imaging with terahertz camera and quantum-cascade laser
- Author
-
Tao Zhou, Zhiyong Tan, Tianhong Xu, Li Gu, and Juncheng Cao
- Subjects
Physics ,business.industry ,Terahertz radiation ,Far-infrared laser ,Laser ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,Photomixing ,Optics ,law ,Reflection (physics) ,Medical imaging ,Optoelectronics ,Electrical and Electronic Engineering ,business ,Quantum cascade laser ,Image resolution - Abstract
A real-time reflection imaging employing a terahertz (THz) camera as the imager and a 3.9 THz quantum-cascade laser (QCL) as the light source is demonstrated. The imaging light is collected and guided by only one off-axis parabolic mirror. The imaging distance is about 1 m. THz images of a coin and a knife are acquired and analyzed. An actual spatial resolution with a value of about 0.33 mm is achieved.
- Published
- 2014