Microwave-Enhanced Laser-Induced Plasma

Low pressure stabilizes signal

By lowering ambient pressure, this plasma source simultaneously improves plasma stability and microwave absorption, resolving the poor repeatability at low laser energy and limited enhancement at high laser energy.

Saleem, Seher · Muhammad, Rizwan · Hou, Zongyu · Wang, Zhe

Analytica Chimica Acta 2026

Specifications

Signal RSD

{'zh': '13', 'en': '13'} %

Advantages

Low pressure stabilizes signal

Reduced ambient pressure suppresses plasma morphology fluctuations, lowering RSD from ~65% to ~13% at low laser energy.

High energy enhancement

At high laser energy, microwave-plasma coupling is enhanced at 5 kPa, significantly increasing signal intensity.

Applications

• Spectrochemical analysis：Provides a stable and enhanced plasma signal source for spectrochemical analysis, improving repeatability.