A Near-Infrared Trace CO2 Detection System Based on an 1,580 nm Tunable Diode Laser Using a Cascaded Integrator Comb (CIC) Filter-Assisted Wavelength Modulation Technique and a Digital Lock-in Amplifier

An FPGA based all-in-one function generator, lock-in amplifier and auto-relockable PID system

(2019) A. Roy et al.   Journal of Instrumentation

Detection of a weak Near-Infrared signal using a digital orthogonal-vector lock-in amplifier

(2019) Q. Tang et al.   Journal of Instrumentation

Ultra-high sensitive light-induced thermoelastic spectroscopy sensor with a high Q-factor quartz tuning fork and a multipass cell

(2019) Ying He et al.   OPTICS LETTERS

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

(2018) Bin Li et al.   Journal of Spectroscopy

TDLAS-WMS second harmonic detection based on spectral analysis

(2018) Chunlei Jiang et al.   REVIEW OF SCIENTIFIC INSTRUMENTS

Quartz-tuning-fork enhanced photothermal spectroscopy for ultra-high sensitive trace gas detection

(2018) Yufei Ma et al.   OPTICS EXPRESS

Sensitive absorption measurements of hydrogen sulfide at 1.578 μm using wavelength modulation spectroscopy

(2015) Hua Xia et al.   Chinese Physics B

Enhanced near-infrared QEPAS sensor for sub-ppm level H 2 S detection by means of a fiber amplified 1582 nm DFB laser

(2015) Hongpeng Wu et al.   SENSORS AND ACTUATORS B-CHEMICAL

On design of a novel class of selective CIC FIR filter functions with improved response

(2014) Biljana P. Stošić et al.   AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS

A Review of Signal Enhancement and Noise Reduction Techniques for Tunable Diode Laser Absorption Spectroscopy

(2014) Jingsong Li et al.   APPLIED SPECTROSCOPY REVIEWS

Demonstration of a portable near-infrared CH4 detection sensor based on tunable diode laser absorption spectroscopy

(2013) Chuan-Tao Zheng et al.   INFRARED PHYSICS & TECHNOLOGY