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1.8 mJ, 3.5 kW single-frequency optical pulses at 1572 nm generated from an all-fiber MOPA system
Optics Letters
|May 16, 2018
Summary
High-energy, single-frequency optical pulses at 1572 nm were generated using an all-fiber MOPA system. This breakthrough advances atmospheric carbon dioxide (CO2) LIDAR applications with record pulse energy.
Area of Science:
- Optics and Photonics
- Laser Technology
- Atmospheric Science
Background:
- Atmospheric monitoring requires high-energy, specific wavelength lasers.
- Fiber laser systems offer advantages in stability and compactness for remote sensing.
Purpose of the Study:
- To develop and demonstrate a high-energy, single-frequency fiber laser source at 1572 nm.
- To assess its suitability for atmospheric carbon dioxide (CO2) LIDAR applications.
Main Methods:
- Utilized a master oscillator power amplifier (MOPA) configuration.
- Employed single-mode, large-core, polarization-maintaining Er-Yb co-doped silicate glass fiber amplifiers.
- Optical pulses were generated and amplified using 976 nm diode laser pumping.
Main Results:
- Achieved 1.8 mJ pulse energy at 3.5 kW peak power with a 2.5 kHz repetition rate.
- Demonstrated 1.3 mJ pulse energy at 2.5 kW peak power with a 7.5 kHz repetition rate.
- Generated single-frequency optical pulses at 1572 nm, achieving the highest reported pulse energy from an all-fiber amplifier system at this wavelength.
Conclusions:
- The developed all-fiber MOPA system successfully generated high-energy, single-frequency 1572 nm optical pulses.
- The system's performance represents a significant advancement for atmospheric CO2 LIDAR systems.
- This work establishes a new benchmark for pulse energy in all-fiber 1572 nm laser systems.
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