Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array

Real-Time Imaging Using a 4.3-THz Quantum Cascade Laser and a 320 240 Microbolometer Focal-Plane Array

We report the use of a 50-mW peak power 4.3-THz quantum cascade laser (QCL) as an illumination source for realtime imaging with a 320 240 element room-temperature microbolometer focal-plane array detector. The QCL is modulated synchronously with the focal-plane array for differential imaging. Signal-to-noise ratios of 340 are achieved at a 20-frame/s acquisition rate, and the optical noise equi...

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 1×10 6 pixels/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 ra...

Real-time transmission-type terahertz microscope with palm size terahertz camera and compact quantum cascade laser

This paper describes a real-time transmission-type Terahertz (THz) microscope, with palm-size THz camera and compact quantum cascade laser (QCL). The THz camera contains 320x240 microbolometer focal plane array which operates at 30 Hz frame rate and has lock-in imaging function as well as integration functions such as frame integration and spatial filter. These functions are found very powerful...

Proposal for real-time terahertz imaging system with palm-size terahertz camera and compact quantum cascade laser

This paper describes a real-time terahertz (THz) imaging system, using the combination of a palm-size THz camera with a compact quantum cascade laser (QCL). The THz camera contains a 320x240 microbolometer focal plane array which has nearly flat spectral response over a frequency range of ca. 1.5 to 100 THz, and operates at 30 Hz frame rate. The QCL is installed in compact cryogen-free cooler. ...

TERAHERTZ IMAGING VIA A MICROBOLOMETER CAMERA UNDER ILLUMINATION OF A QUANTUM CASCADE LASER by