A compact field-portable double-pulse laser system to enhance laser induced breakdown spectroscopy
Abstract
This paper reports the development of a compact double-pulse laser system to enhance laser induced breakdown spectroscopy (LIBS) for field applications. Pumped by high-power vertical-surface emitting lasers, the laser system that produces 16 ns pulse at 12 mJ/pulse with total weight less than 10 kg is developed. The inter-pulse delay can be adjusted from 0μs with 0.5μs increment. Several LIBS experiments were carried out on NIST standard aluminum alloy samples. Comparing with the single-pulse LIBS, up to 9 times enhancement in atomic emission line was achieved with continuum background emission reduced by 70%. This has led to up to 10 times improvement in the limit of detection. Signal stability was also improved by 128% indicating that a more robust and accurate LIBS measurement can be achieved using a compact double-pulse laser system. This paper presents a viable and field deployable laser tool to dramatically improve the sensitivity and applicability of LIBS for a wide array of applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 01, 2017
- Source ID
- 10.1063/1.4975597
Entities
People
- Aidong Yan
- Kevin C. Chen
- Lei Liu
- Rongzhang Chen
- Sheng Huang
- Shuo Li
- Xi Huang
- Yongfeng Lu
Organizations
- Defense Threat Reduction Agency
- National Science Foundation
- University of Nebraska–Lincoln
- University of Pittsburgh