Simultaneous measurements of temperature and CO2 concentration employing diode laser absorption near 2.0 μm

Cai, Tong; Gao, Guangzhen; Wang, Minrui; Wang, Guishi; Liu, Ying; Gao, Xiaoming

doi:10.1007/s00340-015-6015-2

Cited by 17 publications

(6 citation statements)

References 28 publications

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“…The difference between the lower state energy of the two transitions is ∼500 cm −1 . According to our previous discussion of the sensor sensitivity given in Cai et al., 41 a temperature accuracy of 2.5% can be obtained over the temperature range of 500–1200 K if the 2 f peak heights can be determined within 1%. Hence this lower state energy difference can yield enough sensitivity for the temperature measurement in this work.…”

Section: Sensor Designmentioning

confidence: 84%

“…[38][39][40] Those works aimed at the measurement of CO 2 concentration rather than simultaneous measurements of temperature and CO 2 concentration at high pressure. In our previous work, 41 we presented a traditional scan-wavelength WMS senor using DFB diode lasers near 2.0 mm. The sensor can be used for simultaneous measurements of gas temperature and CO 2 concentration at high temperature and atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

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High-Pressure Measurements of Temperature and CO₂ Concentration Using Tunable Diode Lasers at 2 μm

et al. 2016

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A sensor for simultaneous measurements of temperature and carbon dioxide (CO2) concentration at elevated pressure is developed using tunable diode lasers at 2 µm. Based on some selection rules, a CO2 line pair at 5006.140 and 5010.725 cm(-1) is selected for the TDL sensor. In order to ensure the accuracy and rapidity of the sensor, a quasi-fixed-wavelength WMS is employed. Normalization of the 2f signal with the 1f signal magnitude is used to remove the need for calibration and correct for transmission variation due to beam steering, mechanical misalignments, soot, and windows fouling. Temperatures are obtained from comparison of the background-subtracted 1f-normalized WMS-2f signals ratio and a 1f-normalized WMS-2f peak values ratio model. CO2 concentration is inferred from the 1f-normalized WMS-2f peak values of the CO2 transition at 5006.140 cm(-1). Measurements of temperature and CO2 concentration are carried out in static cell experiments (P = 1-10 atm, T = 500-1200 K) to validate the accuracy and ability of the sensor. The results show that accuracy of the sensor for temperature and CO2 concentration are 1.66% temperature and 3.1%, respectively. All the measurements show the potential utility of the sensor for combustion diagnose at elevated pressure.

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Section: Sensor Designmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

High-Pressure Measurements of Temperature and CO₂ Concentration Using Tunable Diode Lasers at 2 μm

et al. 2016

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“…Trace gas detection has numerous significant applications in various fields, such as biomedical analyses [1,2], combustion diagnosis [3][4][5], atmospheric environmental monitoring [6][7][8][9], as well as petroleum exploration [10,11]. Gas sensing technology based on laser absorption spectroscopy (LAS) has a number of advantages, including high sensitivity, rapid response time, high selectivity, et al [12].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Trace Gas Detection Based on In-Plane Single-Quartz-Enhanced Dual Spectroscopy

Tao

Qiao

Lang

et al. 2022

Sensors

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For this invited manuscript, an in-plane single-quartz-enhanced dual spectroscopy (IP-SQEDS)-based trace gas sensor was demonstrated for the first time. A single quartz tuning fork (QTF) was employed to combine in-plane quartz-enhanced photoacoustic spectroscopy (IP-QEPAS) with light-induced thermoelastic spectroscopy (LITES) techniques. Water vapor (H2O) was chosen as the target gas. Compared to traditional QEPAS, IP-SQEDS not only allowed for simple structures, but also obtained nearly three times signal amplitude enhancement.

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“…The fingerprint region (2-20 µm) is full of strong vibrational fundamental absorption bands of many molecular gases [18], which is one of the primary reasons why this research field is growing. OFCs generated in the mid-IR wavelength region enable precise, real-time and high-resolution spectroscopy measurements [19][20][21], and these properties are particularly interesting in various applications, for example, medical apparatus [18,22,23], defense [24], environmental monitoring [25,26] and process control [27]. The most common DFG-based mid-IR OFC sources rely on the use of highly nonlinear optical fibers, which broaden the spectrum of an erbium comb into the 1 µm wavelength region.…”

Section: Introductionmentioning

confidence: 99%

A dual-wavelength amplifier that enables the simultaneous chirped-pulse amplification of femtosecond 1562 nm pulses and continuous wave 1064 nm radiation for applications in difference frequency generation

et al. 2016

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We present the first demonstration of a chirped-pulse amplification system that enables the simultaneous amplification of femtosecond pulses from the erbium band and continuous wave radiation centered at 1064 nm. The setup generated 470 fs laser pulses, centered at 1562 nm, with an average output power of 590 mW. By exploiting the unique dual-wavelength design an additional gain of 18.08 dB was achieved for the auxiliary 1064 nm seed signal required in the frequency conversion part of the setup. The usability of the constructed source was verified by setting up a difference frequency generation experiment in which the unique characteristics of the mode-locked laser pulses were transferred into the mid-infrared wavelength region.

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Simultaneous measurements of temperature and CO2 concentration employing diode laser absorption near 2.0 μm

Cited by 17 publications

References 28 publications

High-Pressure Measurements of Temperature and CO₂ Concentration Using Tunable Diode Lasers at 2 μm

High-Pressure Measurements of Temperature and CO₂ Concentration Using Tunable Diode Lasers at 2 μm

Highly Sensitive Trace Gas Detection Based on In-Plane Single-Quartz-Enhanced Dual Spectroscopy

A dual-wavelength amplifier that enables the simultaneous chirped-pulse amplification of femtosecond 1562 nm pulses and continuous wave 1064 nm radiation for applications in difference frequency generation

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Simultaneous measurements of temperature and CO2 concentration employing diode laser absorption near 2.0 μm

Cited by 17 publications

References 28 publications

High-Pressure Measurements of Temperature and CO2 Concentration Using Tunable Diode Lasers at 2 μm

High-Pressure Measurements of Temperature and CO2 Concentration Using Tunable Diode Lasers at 2 μm

Highly Sensitive Trace Gas Detection Based on In-Plane Single-Quartz-Enhanced Dual Spectroscopy

A dual-wavelength amplifier that enables the simultaneous chirped-pulse amplification of femtosecond 1562 nm pulses and continuous wave 1064 nm radiation for applications in difference frequency generation

Contact Info

Product

Resources

About

High-Pressure Measurements of Temperature and CO₂ Concentration Using Tunable Diode Lasers at 2 μm

High-Pressure Measurements of Temperature and CO₂ Concentration Using Tunable Diode Lasers at 2 μm