Journal of Physical Chemistry & Biophysics
Open Access

Towards a portable confocal Raman module for sample identification and quantification

International Conference and Trade fair on Laser Technology

July 20-22, 2015 Orlando, Florida, USA

Iyll-Joon Doh, Huisung Kim, and Euiwon Bae

Scientific Tracks Abstracts: J Phys Chem Biophys

Abstract :

We report a design of a portable confocal Raman spectroscopy module for sample identification and quantification. An economic laser diode (780nm) and a narrow band pass filter (785nm) located at rotational stage were integrated in a modular format. A dichroic short pass mirror (805nm), an OD 5 long pass filter (800nm), and an objective lens are installed to split elastic scattering and Raman scattering photons from the specimen. Utilizing a single mode fiber optic with a collimator and the objective lens, confocal-like signal is captured to reject information from the out-of-focus sections which allows a chemical optical sectioning of the sample. For validation and characterization, we have used glucose solution with several concentration, and two different glucose concentration solutions on a plate glass separated by a covered glass. The feasibility test showed a promising result to quantify the sample, and optical sectioning with proposed confocal Raman spectroscopy.

Biography :

Iyll-Joon Doh is a graduate student in Mechanical Engineering Department at Purdue University pursuing master�??s degree. He received Bachelor�??s degree of science in Mechanical Engineering at Purdue University in 2013. His current research is on glucose detection via light scattering method. The research interest involves in mechanical and electrical design, precision control, and laser applications in bio-medical areas.