Schematic of miniaturized system (IMAGE)

Optica

Schematic of miniaturized system

Caption

Researchers developed a handheld photothermal mid-infrared spectroscopic imaging (MIRSI) system that measures just 8 square inches. Probe light from a visible (red) diode laser and pump light from a modulated quantum cascade laser (QCL) are coupled into optical fibers and delivered to a flexible, handheld imager (blue dashed box). The beams are combined at a short-pass dichroic mirror and focused onto the sample using an off-axis parabolic mirror (OAP).

Credit

Rohith Reddy, University of Houston

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