FOLLOWUS
Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy
- 超快科学（英文） 2023年3卷第3期
- Affiliations：
a National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology,Harbin,China,150001
- Author bio：
- Funds：
DOI：10.34133/ultrafastscience.0024
中图分类号：纸质出版日期：2023，
- Accepted：
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Yufei Ma, Tiantian Liang, Shunda Qiao, Xiaonan Liu, Ziting Lang. 2023: Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy. 超快科学, 3(3).
Yufei Ma, Tiantian Liang, Shunda Qiao, Xiaonan Liu, Ziting Lang. 2023: Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy. Ultrafast Science, 3(3).
Yufei Ma, Tiantian Liang, Shunda Qiao, Xiaonan Liu, Ziting Lang. 2023: Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy. 超快科学, 3(3). DOI： 10.34133/ultrafastscience.0024
Yufei Ma, Tiantian Liang, Shunda Qiao, Xiaonan Liu, Ziting Lang. 2023: Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy. Ultrafast Science, 3(3). DOI： 10.34133/ultrafastscience.0024
摘要
As a new energy source
hydrogen (H2) detection is a hot topic in recent years. Because of the weak absorption characteristic
laser spectroscopy-based H2 detection is challenging. In this paper
a highly sensitive H2 sensor based on light-induced thermoelastic spectroscopy (LITES) technique is demonstrated for the first time. A continuous-wave
distributed feedback diode laser with emission in the 2.1 μm region was adopted as the excitation source to target the strongest H2 absorption line of 4
712.90 cm−1. A Herriott multipass cell with an optical length of 10.1 m was chosen to further improve the H2 absorption. With the feature of processing the raw input data without data preprocessing and extracting the desired features automatically
the robust shallow neural network (SNN) fitting algorithm was brought in to denoise the sensor. For the LITES-based H2 sensor
the concentration response was tested
and an excellent linear response to H2 concentration levels was achieved. A minimum detection limit (MDL) of ~80 ppm was obtained. On the basis of implementation of the H2-LITES sensor
a heterodyne H2-LITES sensor was further constructed to realize a fast measurement of resonance frequency of quartz tuning fork and H2 concentration simultaneously. The resonance frequency can be retrieved in several hundred milliseconds with the measurement accuracy of ±0.2 Hz
and the result of 30
713.76Hz is exactly same as the experimentally determined value of 30
713.69 Hz. After the SNN algorithm was applied
an MDL of ~45 ppm was achieved for this heterodyne H2-LITES sensor.
Abstract
As a new energy source
hydrogen (H2) detection is a hot topic in recent years. Because of the weak absorption characteristic
laser spectroscopy-based H2 detection is challenging. In this paper
a highly sensitive H2 sensor based on light-induced thermoelastic spectroscopy (LITES) technique is demonstrated for the first time. A continuous-wave
distributed feedback diode laser with emission in the 2.1 μm region was adopted as the excitation source to target the strongest H2 absorption line of 4
712.90 cm−1. A Herriott multipass cell with an optical length of 10.1 m was chosen to further improve the H2 absorption. With the feature of processing the raw input data without data preprocessing and extracting the desired features automatically
the robust shallow neural network (SNN) fitting algorithm was brought in to denoise the sensor. For the LITES-based H2 sensor
the concentration response was tested
and an excellent linear response to H2 concentration levels was achieved. A minimum detection limit (MDL) of ~80 ppm was obtained. On the basis of implementation of the H2-LITES sensor
a heterodyne H2-LITES sensor was further constructed to realize a fast measurement of resonance frequency of quartz tuning fork and H2 concentration simultaneously. The resonance frequency can be retrieved in several hundred milliseconds with the measurement accuracy of ±0.2 Hz
and the result of 30
713.76Hz is exactly same as the experimentally determined value of 30
713.69 Hz. After the SNN algorithm was applied
an MDL of ~45 ppm was achieved for this heterodyne H2-LITES sensor.
关键词
Keywords
references
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