Developing mobile LIBS solutions for real world applications

Qun Li; Jing Li; Katherine Bakeev; Sean Wang

doi:10.1117/12.2180157

3 June 2015 Developing mobile LIBS solutions for real world applications

Qun Li, Jing Li, Katherine Bakeev, Sean Wang

Proceedings Volume 9482, Next-Generation Spectroscopic Technologies VIII; 94820F (2015) https://doi.org/10.1117/12.2180157
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

We present a new type of handheld laser-induced breakdown spectroscopy (LIBS) spectrometer for developing mobile atomic spectroscopy solutions for real world applications. A micro diode-pumped passive Q-switched solid-state laser with high repetition rate of well above 1 kHz in comparison to 1-10 Hz as used in a traditional LIBS instrument is employed to produce a train of laser pulses. The laser beam is further fast scanned over a pre-defined area, hence generating several hundreds of micro-plasmas per second at different locations. Synchronized miniature CCD array spectrometer modules collect the LIBS signal and generate LIBS spectra. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR). This unique feature of the high repetition rate laser based LIBS system allows it to measure elements at trace levels, hence reducing the limit of detection (LOD). The increased signal intensity also lessens the sensitivity requirement for the optical spectrometer. In addition, the energy of the individual laser pulse can be reduced in comparison to traditional LIBS system to obtain the same signal level, making the laser pulse less invasive to the sample. The typical measurement time is within 1 second. Several examples of real world applications will be presented.

Citation Download Citation

Qun Li, Jing Li, Katherine Bakeev, and Sean Wang "Developing mobile LIBS solutions for real world applications", Proc. SPIE 9482, Next-Generation Spectroscopic Technologies VIII, 94820F (3 June 2015); https://doi.org/10.1117/12.2180157

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Laser induced breakdown spectroscopy

Spectroscopy

Pulsed laser operation

Silicon

Calcium

Aluminum

Zinc

Show All Keywords

Keywords/Phrases

Search In:

Publication Years