Rapid long-wave infrared laser-induced breakdown spectroscopy measurements using a mercury-cadmium-telluride linear array detection system

Appl Opt. 2015 Nov 20;54(33):9695-702. doi: 10.1364/AO.54.009695.

Abstract

In this work, we develop a mercury-cadmium-telluride linear array detection system that is capable of rapidly capturing (∼1-5 s) a broad spectrum of atomic and molecular laser-induced breakdown spectroscopy (LIBS) emissions in the long-wave infrared (LWIR) region (∼5.6-10 μm). Similar to the conventional UV-Vis LIBS, a broadband emission spectrum of condensed phase samples covering the whole 5.6-10 μm region can be acquired from just a single laser-induced microplasma or averaging a few single laser-induced microplasmas. Atomic and molecular signature emission spectra of solid inorganic and organic tablets and thin liquid films deposited on a rough asphalt surface are observed. This setup is capable of rapidly probing samples "as is" without the need of elaborate sample preparation and also offers the possibility of a simultaneous UV-Vis and LWIR LIBS measurement.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Cadmium Compounds*
  • Chemical Warfare Agents / chemistry
  • Infrared Rays
  • Lasers*
  • Mercury Compounds*
  • Optical Phenomena
  • Organic Chemicals / chemistry
  • Perchlorates / chemistry
  • Potassium / chemistry
  • Quaternary Ammonium Compounds / chemistry
  • Spectrophotometry, Atomic / methods
  • Spectrum Analysis / methods*

Substances

  • Cadmium Compounds
  • Chemical Warfare Agents
  • Mercury Compounds
  • Organic Chemicals
  • Perchlorates
  • Quaternary Ammonium Compounds
  • mercury cadmium telluride
  • Potassium
  • ammonium perchlorate