Laser direct infrared imaging (LDIR) is an infrared microscopy architecture that utilizes a tunable

Quantum Cascade Laser Quantum-cascade lasers (QCLs) are semiconductor lasers that emit in the mid- to far-infrared portion of the electromagnetic spectrum and were first demonstrated by Jérôme Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson, a ...

(QCL) as the IR source. This new reflectance-based architecture eliminates coherence artifacts typically associated with QCLs. It also allows the acquisition of large-area, high-definition IR images as well as high signal-to-noise point spectra. Extending this architecture using

Attenuated Total Reflectance Attenuated total reflection (ATR) is a sampling technique used in conjunction with infrared spectroscopy which enables samples to be examined directly in the solid or liquid state without further preparation. ATR uses a property of total inter ...

(ATR) allows the acquisition of high fidelity spectra from features less than 10 μm in size. The application of LDIR to stain-free biochemical imaging has recently been reported, with the authors citing the speed of LDIR imaging as an advantage over traditional IR imaging architectures.

References

{{Reflist Infrared imaging