LIBS system with compact fiber spectrometer, head mounted spectra display and hand held eye-safe erbium glass laser gun

Michael J. Myers; John D. Myers; John T. Sarracino; Christopher R. Hardy; Baoping Guo; Sean M. Christian; Jeffrey A. Myers; Franziska Roth; Abbey G. Myers

doi:10.1117/12.841901

17 February 2010 LIBS system with compact fiber spectrometer, head mounted spectra display and hand held eye-safe erbium glass laser gun

Michael J. Myers, John D. Myers, John T. Sarracino, Christopher R. Hardy, Baoping Guo, Sean M. Christian, Jeffrey A. Myers, Franziska Roth, Abbey G. Myers

Author Affiliations +

Proceedings Volume 7578, Solid State Lasers XIX: Technology and Devices; 75782G (2010) https://doi.org/10.1117/12.841901
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

LIBS (Laser Induced Breakdown Spectroscopy) systems are capable of real-time chemical analysis with little or no sample preparation. A Q-switched laser is configured such that laser induced plasma is produced on targeted material. Chemical element line spectra are created, collected and analyzed by a fiber spectrometer. Line spectra emission data is instantly viewed on a head mounted display. "Eye-safe" Class I erbium glass lasers provide for insitu LIBS applications without the need for eye-protection goggles. This is due to the fact that Megawatt peak power Q-switched lasers operating in the narrow spectral window between 1.5um and 1.6um are approximately 8000 times more "eye-safe" than other laser devices operating in the UV, visible and near infrared. In this work we construct and demonstrate a LIBS system that includes a hand held eye-safe laser gun. The laser gun is fitted with a micro-integrating sphere in-situ target interface and is designed to facilitate chemical analysis in remote locations. The laser power supply, battery pack, computer controller and spectrophotometer components are packaged into a utility belt. A head mounted display is employed for "hands free" viewing of the emitted line spectra. The system demonstrates that instant qualitative and semi-quantitative chemical analyses may be performed in remote locations utilizing lightweight commercially available system components ergonomically fitted to the operator.

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Michael J. Myers, John D. Myers, John T. Sarracino, Christopher R. Hardy, Baoping Guo, Sean M. Christian, Jeffrey A. Myers, Franziska Roth, and Abbey G. Myers "LIBS system with compact fiber spectrometer, head mounted spectra display and hand held eye-safe erbium glass laser gun", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75782G (17 February 2010); https://doi.org/10.1117/12.841901

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