Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique
Laser current and temperature control circuits have been developed for a distributed feedback laser diode, which is applied as the light source of a tuneable diode laser absorption spectroscopy system. The laser’s temperature fluctuation can be limited within the range of −0.02 to 0.02°C, and good o...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2021/8829790 |
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| _version_ | 1832561366046605312 |
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| author | Bin Li Liang Xue Nan Ji Da Hui Wei |
| author_facet | Bin Li Liang Xue Nan Ji Da Hui Wei |
| author_sort | Bin Li |
| collection | DOAJ |
| description | Laser current and temperature control circuits have been developed for a distributed feedback laser diode, which is applied as the light source of a tuneable diode laser absorption spectroscopy system. The laser’s temperature fluctuation can be limited within the range of −0.02 to 0.02°C, and good operation stability was observed through 15 hours of monitoring on the emitting wavelength of the laser. Response time of temperature modulation was tested which is suitable for the tuning requirements of gas detection systems. Laser current can be injected within the range from 40 to 80 mA. In addition, a linear power supply circuit has been developed to provide stable and low-noise power supply for the system. The physical principles of laser modulation theory are discussed before experiments. Experiments show that the output wavelength of the laser can be tuned accurately through changing the working current and temperature. The wavelength can be linearly controlled by temperature at 0.115 nm/°C (I = 70 mA) and be controlled by current at 0.0140 nm/mA (T = 25°C). This is essential for the tuneable diode laser absorption spectroscopy systems. The proposed cost-effective circuits can replace commercial instruments to drive the laser to meet the requirements of methane detection experiments. It can also be applied to detect other gases by changing the light source lasers and parameters of the circuits. |
| format | Article |
| id | doaj-art-7bd9e6f7a4b04a92b17d9816e716f5e9 |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-7bd9e6f7a4b04a92b17d9816e716f5e92025-02-03T01:25:14ZengWileyInternational Journal of Optics1687-93841687-93922021-01-01202110.1155/2021/88297908829790Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS TechniqueBin Li0Liang Xue1Nan Ji2Da Hui Wei3College of Computer Science and Technology, Jilin University, Changchun 130012, ChinaInstitute of Electrical & Computer Engineering, Jilin Jianzhu University, Changchun 130012, ChinaInstitute of Electrical & Computer Engineering, Jilin Jianzhu University, Changchun 130012, ChinaInstitute of Electrical & Computer Engineering, Jilin Jianzhu University, Changchun 130012, ChinaLaser current and temperature control circuits have been developed for a distributed feedback laser diode, which is applied as the light source of a tuneable diode laser absorption spectroscopy system. The laser’s temperature fluctuation can be limited within the range of −0.02 to 0.02°C, and good operation stability was observed through 15 hours of monitoring on the emitting wavelength of the laser. Response time of temperature modulation was tested which is suitable for the tuning requirements of gas detection systems. Laser current can be injected within the range from 40 to 80 mA. In addition, a linear power supply circuit has been developed to provide stable and low-noise power supply for the system. The physical principles of laser modulation theory are discussed before experiments. Experiments show that the output wavelength of the laser can be tuned accurately through changing the working current and temperature. The wavelength can be linearly controlled by temperature at 0.115 nm/°C (I = 70 mA) and be controlled by current at 0.0140 nm/mA (T = 25°C). This is essential for the tuneable diode laser absorption spectroscopy systems. The proposed cost-effective circuits can replace commercial instruments to drive the laser to meet the requirements of methane detection experiments. It can also be applied to detect other gases by changing the light source lasers and parameters of the circuits.http://dx.doi.org/10.1155/2021/8829790 |
| spellingShingle | Bin Li Liang Xue Nan Ji Da Hui Wei Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique International Journal of Optics |
| title | Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique |
| title_full | Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique |
| title_fullStr | Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique |
| title_full_unstemmed | Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique |
| title_short | Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique |
| title_sort | research on spectroscopy modulation of a distributed feedback laser diode based on the tdlas technique |
| url | http://dx.doi.org/10.1155/2021/8829790 |
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