Abstract

Laser-induced breakdown spectroscopy (LIBS) has attracted a lot of attention due to its potential to rapidly identify and quantify any chemical element with minimal sample preparation. Despite continuous improvements, the sensitivity of this technique still remains a challenge. In order to increase LIBS intensity, a laser-induced fluorescence (LIF) system can be coupled with LIBS to re-excite a transition of the element in the plasma by employing very expensive optical parametric oscillators (OPO). In this work, a homemade tunable continuum wave-diode laser (CW-DL) has been developed and coupled to a double pulse (DP) LIBS system to enhance the sensitivity of Pb detection in a soil sample at the transition 6s26p2P326s26p7sP31 at 405.78 nm. Before sample analysis, the production of no scattered light by the plasma was ascertained, and the optimal temperature of 10,000 K was estimated for this transition, feasible to be achieved in DP-LIBS systems. An increase of approximately 100% for the Pb I transition at 405.78 nm was obtained by DP-LIBS-CW-DL-LIF with respect to the DP-LIBS system alone. This result opens a new promising line of research to improve LIBS sensitivity using the CW-DL approach.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Determination of antimony in soil using laser-induced breakdown spectroscopy assisted with laser-induced fluorescence

Peiyuan Gao, Ping Yang, Ran Zhou, Shixiang Ma, Wen Zhang, Zhongqi Hao, Shisong Tang, Xiangyou Li, and Xiaoyan Zeng
Appl. Opt. 57(30) 8942-8946 (2018)

Detection of carcinogenic metals in kidney stones using ultraviolet laser-induced breakdown spectroscopy

Ahmed Asaad I. Khalil, Mohammed A. Gondal, Mohamed Shemis, and Irfan S. Khan
Appl. Opt. 54(8) 2123-2131 (2015)

Effects of laser pulse sequence on laser-induced soil plasma emission

Jinzhong Chen, Zhenyu Chen, Jiang Sun, Xu Li, Zechao Deng, and Yinglong Wang
Appl. Opt. 51(34) 8141-8146 (2012)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription