研究目的
Investigating the development of a high peak-power 1579 nm pulsed fiber laser source for CO2 monitoring from space using lidar technology.
研究成果
The development of a 1579 nm pulsed fiber laser source for spaceborne CO2 monitoring shows promising results, achieving 1.7 kW peak power for 150 ns pulses. The use of SBS mitigation techniques, such as strain distribution, has significantly improved performance. Further work is needed to increase peak power and assess the long-term reliability of strained fibers under space conditions.
研究不足
The main limitations include the lower Erbium gain at 1579 nm compared to more 'classical' wavelengths and the challenge of overcoming Stimulated Brillouin Scattering (SBS) threshold peak power due to the demand for short pulses.
1：Experimental Design and Method Selection:
The study focuses on the development of a pulsed fiber laser source at 1579 nm for CO2 monitoring. The methodology includes the use of a three-stage master oscillator power amplifier (MOPA) seeded by tunable and well-referenced oscillators.
2：Sample Selection and Data Sources:
The seed lasers are Telecom DFB laser diodes stabilized by a master/slave architecture.
3：List of Experimental Equipment and Materials:
Includes DFB laser diodes, Acousto-Optic Modulator (AOM), Erbium-doped fibers, Large Mode Area (LMA) fiber, and Raman Fiber Laser (RFL).
4：Experimental Procedures and Operational Workflow:
The process involves generating gaussian pulse shapes, amplification through three stages, and measuring output power and beam quality.
5：Data Analysis Methods:
The performance is evaluated based on peak power, pulse energy, beam quality, and spectral purity.
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