Development of an ultra-compact mid-infrared attenuated total reflectance spectrophotometer

Dong Soo Kim, Tae Ro Lee, Gilwon Yoon

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Mid-infrared spectroscopy has been an important tool widely used for qualitative analysis in various fields. However, portable or personal use is size and cost prohibitive for either Fourier transform infrared or attenuated total reflectance (ATR) spectrophotometers. In this study, we developed an ultra-compact ATR spectrophotometer whose frequency band was 5.5-11.0 μm. We used miniature components, such as a light source fabricated by semiconductor technology, a linear variable filter, and a pyro-electric array detector. There were no moving parts. Optimal design based on two light sources, a zippered configuration of the array detector and ATR optics could produce absorption spectra that might be used for qualitative analysis. A microprocessor synchronized the pulsed light sources and detector, and all the signals were processed digitally. The size was 13.5 × 8.5 × 3.5 cm<sup>3</sup> and the weight was 300 grams. Due to its low cost, our spectrophotometer can replace many online monitoring devices. Another application could be for a u-healthcare system installed in the bathroom or attached to a smartphone for monitoring substances in body fluids.

Original languageEnglish
Article number074108
JournalOptical Engineering
Volume53
Issue number7
DOIs
Publication statusPublished - 2014

Fingerprint

Spectrophotometers
spectrophotometers
Light sources
light sources
qualitative analysis
Infrared radiation
reflectance
detectors
Detectors
body fluids
Monitoring
Smartphones
Body fluids
microprocessors
Photodetectors
Frequency bands
Microprocessor chips
Costs
Absorption spectra
Infrared spectroscopy

Keywords

  • attenuated total reflection
  • body fluid
  • handheld spectrophotometer
  • infrared spectroscopy
  • ubiquitous healthcare

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

Development of an ultra-compact mid-infrared attenuated total reflectance spectrophotometer. / Kim, Dong Soo; Lee, Tae Ro; Yoon, Gilwon.

In: Optical Engineering, Vol. 53, No. 7, 074108, 2014.

Research output: Contribution to journalArticle

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