High Precision Dual Frequency Doppler Lidar Based on Monolithic Integrated Two-Section DFB Lasers

Lu, Zuye; Fang, Tao; Chen, Xiangfei; Zhang, Yunshan; Zeng, Jie; Li, Lianyan; Yuan, Bocheng; Shi, Yuechun; Zheng, Jilin; Shang, Zijun; Xiao, Rulei

doi:10.1109/jphot.2019.2950289

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…12 A simple DF-LDV for micrometer movement targets detection was proposed 13 and a high-precision DF Doppler Lidar (DF-DL) to detect ultralow speed targets was demonstrated. 14 However, a DF lidar that can measure a wide speed range while a long-distance is desirable. Meanwhile, the anti-atmospheric interference characteristics of DF laser were discussed and the possibility of DF lidar for hypersonic targets detection was proved to be feasible theoretically.…”

Section: Introductionmentioning

confidence: 99%

“…Onori demonstrated a novel coherent DF lidar that can act at different frequencies, which means range ambiguity and precision were tunable 12 . A simple DF‐LDV for micrometer movement targets detection was proposed 13 and a high‐precision DF Doppler Lidar (DF‐DL) to detect ultra‐low speed targets was demonstrated 14 . However, a DF lidar that can measure a wide speed range while a long‐distance is desirable.…”

Section: Introductionmentioning

confidence: 99%

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A dual‐frequency continuous wave doppler lidar for velocity measurement at far distance

Xing

Gao

et al. 2021

Micro & Optical Tech Letters

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A dual-frequency continuous wave Doppler lidar for long-distance and high-precision velocity measurement is experimentally demonstrated in this article. The lidar system uses the optical heterodyne detection method to avoid complicated optical coherent configuration. All Phase Fast Fourier Transform and Chirp-Z Transform are used to obtain the Doppler frequency shift. The maximum of the calculated Doppler shift was 999.83 Hz with the frequency resolution of 0.54 Hz, and the corresponding theoretical velocity was determined to be 749.87 m/s. During the experiment, the speed of the car was successfully measured in the outdoor environment, the frequency and velocity resolutions were less than 0.5 Hz and AE 0.2 m/s, respectively, and the detection distance of moving and stationary targets reached 1100 m and 2300 m. The capability of the dual-frequency Doppler lidar system has been verified.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A dual‐frequency continuous wave doppler lidar for velocity measurement at far distance

Xing

Gao

et al. 2021

Micro & Optical Tech Letters

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“…Besides, a signal generator is also a type of essential instrument for a laser's output signal control. By utilizing the commercial instruments mentioned above, lasers can be controlled effectively to meet the requirements of gas-sensing experiments based on infrared absorption spectroscopy techniques [26,27]. However, there are still some drawbacks of using the commercial instruments.…”

Section: Introductionmentioning

confidence: 99%

Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique

Xue

et al. 2021

International Journal of Optics

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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.

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Generation of a tunable Dual-frequency source by operating a laser at Period-one

Chen,

Ruan,

Fang

et al. 2023

2023 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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High Precision Dual Frequency Doppler Lidar Based on Monolithic Integrated Two-Section DFB Lasers

Cited by 5 publications

References 19 publications

A dual‐frequency continuous wave doppler lidar for velocity measurement at far distance

A dual‐frequency continuous wave doppler lidar for velocity measurement at far distance

Research on Spectroscopy Modulation of a Distributed Feedback Laser Diode Based on the TDLAS Technique

Generation of a tunable Dual-frequency source by operating a laser at Period-one

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