Laser ablation analysis

US11435290B2 · kind B2 · utility

Assignee

• Applied Spectra, INC. · US

Inventors

• Alexander A. Bol'shakov · Union City, US
• Chunyi Liu · Fremont, US
• Jong Hyun Yoo · Milpitas, US
• Sudeep J. Pandey · Sacramento, US
• Richard E. Russo · Walnut Creek, US
• Randolph S. Tribe · San Jose, US

Key dates

• Filing date: Jul 2, 2021
• Grant date: Sep 6, 2022
• Expiry date: Jul 2, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J49/105
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods for laser induced ablation spectroscopy (LIBS) are disclosed. Light from laser ablation can be gathered into a lightguide fiber bundle that is subdivided into branches. One branch can convey a first portion of the light to a broadband spectrometer operable to analyze a relatively wide spectral segment, and a different branch can convey a second portion of the light to a high dispersion spectrometer operable to measure minor concentrations and/or trace elements. Emissions can be analyzed using a plurality of spectrometers having distinct and/or complementary capabilities, and with a synergistic method using inductively coupled plasma mass spectrometry.