Louisiana State University and Agricultural & Mechanical College

Dooyoung Hah

Martin Barry Feldman

A contact-type endoscope surface enhanced Raman scattering (SERS) probe includes a gradient-index (GRIN) lens, a transparent substrate adhered to the GRIN lens, and a rough metallic layer adhered to an opposite side of the transparent substrate from the GRIN lens. The GRIN lens focuses light from a Raman spectrometer onto the rough metallic layer, and the rough metallic layer is positioned at the distal end of the contact-type endoscope SERS probe.

Contact-type endoscope SERS probe, and related methods

A forward-looking, optical coherence tomography, endoscopic probe is disclosed capable of high resolution with a small diameter. Light is focused and scanned during three passes through a lens. A light source supplies light to the proximal side of the lens. The light makes a first pass through the lens, and is reflected from a fixed mirror on the distal side. The reflected light makes a second pass from the distal side to the proximal side, and exits the lens at the proximal side, and is reflected by a scanning mirror. The light makes a third pass through the lens from the proximal side to the distal side to a sample to be imaged. The light is focused during each of the three passes through the lens. Light reflected from the sample passes back through and is focused by the same system.

Growing community of inventors

Baton Rouge, LA, United States of America

Dooyoung Hah