1.7 μm/1.5 μm NIR spectroscopy system

Stand-off detection of turbulent ethanol gas

This system employs a dual-band laser approach to overcome the scintillation-induced measurement failure of ethanol gas concentration in turbulent conditions, a limitation of conventional single-wavelength systems.

He, Shuang · Zhang, Peng · Li, Qi · Wei, Jia · Ning, Yuzhu · Yang, Liu · Li, Xiaoyan · Tong, Shoufeng

Optical Fiber Technology 2023

Specifications

laser linewidth

{'zh': '约 0.18', 'en': '~0.18'} nm

linear fit R

{'zh': '', 'en': '1.7'} μm band

Advantages

Turbulent ethanol gas dual-band detection R² = 0.83 (power jitter variance 2.35)