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IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

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Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Spatially resolved spectral interferometry for determination of subsurface structure.

A F Zuluaga, R Richards-Kortum

|December 12, 2007

Summary

This study introduces a novel instrument for real-time, 2D subsurface imaging without moving parts, utilizing spectral interferometry. The system achieves high resolution, paving the way for advanced imaging applications.

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Area of Science:

Optical Imaging
Spectroscopy
Biomedical Optics

Background:

Current subsurface imaging techniques often require moving parts or lack real-time capabilities.
There is a need for non-invasive imaging methods with high resolution for various scientific and medical applications.

Purpose of the Study:

To develop and demonstrate a novel instrument for real-time, two-dimensional subsurface imaging.
To showcase the capabilities of spectral interferometry for high-resolution imaging without mechanical components.

Main Methods:

The instrument employs spectral interferometry, using an imaging spectrograph to capture spatially resolved spectra.
No moving parts are utilized in the system design, enabling real-time image acquisition.

Main Results:

The system achieved a depth resolution of 38 micrometers (µm).
Transverse resolution was demonstrated to be at least 12.7 micrometers (µm).
The instrument successfully acquired two-dimensional images of subsurface structures.

Conclusions:

The developed instrument provides real-time, high-resolution subsurface imaging capabilities.
The technique is adaptable for endoscopic delivery and three-dimensional imaging.
This technology holds potential for applications requiring non-invasive, detailed structural analysis.