Baseline-free direct laser absorption spectroscopy with sinusoidal modulation: a theoretical and experimental study for combustion diagnostics

Key Points

• Baseline-free direct laser absorption spectroscopy enhances precision in combustion diagnostics, providing more reliable data.
• The study measures key combustion parameters using sinusoidal modulation to eliminate baseline noise, leading to clearer insights.
• Assessment using both theoretical frameworks and experimental techniques reveals the efficacy of the proposed method in real-time diagnostics.
• These findings may enable better combustion monitoring in industrial applications, ultimately enhancing efficiency and reducing emissions.