Resolving gas temperature distributions with single-beam dual-comb absorption spectroscopy

Malarich, Nathan; Rieker, Gregory B.

doi:10.1364/cleo_si.2017.sw1l.7

Cited by 2 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Improvement in laser source and tomographic algorithms will contribute to greater accuracy in the temperature and concentration distribution reconstruction, using either of the two approaches above. Rieker et al have extended the single LOS technique from advanced and expensive diode lasers with much broader tuning range (up to 10-15 cm −1 ) to a dual-frequency comb spectrometer [66,67]. The temperature distribution reconstruction accuracies increase as more absorption lines are incorporated.…”

Section: Summary Of Measurement Schemesmentioning

confidence: 99%

Laser Absorption Sensing Systems: Challenges, Modeling, and Design Optimization

Wang

Chao

2019

Applied Sciences

View full text Add to dashboard Cite

Laser absorption spectroscopy (LAS) is a promising diagnostic method capable of providing high-bandwidth, species-specific sensing, and highly quantitative measurements. This review aims at providing general guidelines from the perspective of LAS sensor system design for realizing quantitative species diagnostics in combustion-related environments. A brief overview of representative detection limits and bandwidths achieved in different measurement scenarios is first provided to understand measurement needs and identify design targets. Different measurement schemes including direct absorption spectroscopy (DAS), wavelength modulation spectroscopy (WMS), and their variations are discussed and compared in terms of advantages and limitations. Based on the analysis of the major sources of noise including electronic, optical, and environmental noises, strategies of noise reduction and design optimization are categorized and compared. This addresses various means of laser control parameter optimization and data processing algorithms such as baseline extraction, in situ laser characterization, and wavelet analysis. There is still a large gap between the current sensor capabilities and the demands of combustion and engine diagnostic research. This calls for a profound understanding of the underlying fundamentals of a LAS sensing system in terms of optics, spectroscopy, and signal processing.

show abstract

Section: Summary Of Measurement Schemesmentioning

confidence: 99%

Laser Absorption Sensing Systems: Challenges, Modeling, and Design Optimization

Wang

Chao

2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…8.17). A relatively large number of spectral transition lines can be accessed using widely tunable laser sources such as dual-comb spectrometer [27,43], external cavity lasers [25,44], multiplexed laser systems [45], MEMS-vertical cavity surface emitting laser (VCSEL) [46], and others. Apart from the number of spectral transitions being scanned, the database used for inferring the mole fraction/temperature also influences the measurement error significantly.…”

Section: Temperature Stratificationmentioning

confidence: 99%

“…Fig.8.17 Temperature profiles for different laser sources. Green line: Two-line technique with diode laser, blue line: 12 spectral lines with external cavity laser[44], and black line: dual-comb spectrometer covering 937 lines[43].…”

mentioning

confidence: 99%

Laser Absorption

Farooq

Alquaity

2023

Optical Diagnostics for Reacting and Non-Reacting Flows: Theory and Practice

View full text Add to dashboard Cite

Resolving gas temperature distributions with single-beam dual-comb absorption spectroscopy

Cited by 2 publications

References 7 publications

Laser Absorption Sensing Systems: Challenges, Modeling, and Design Optimization

Laser Absorption Sensing Systems: Challenges, Modeling, and Design Optimization

Laser Absorption

Contact Info

Product

Resources

About