A fiber-solid hybrid 1319 nm single-frequency MOPA Laser for sodium Doppler lidar
Optics Communications(2023)
摘要
The narrow linewidth nanosecond pulse 1319 nm laser used to generate 589 nm laser is the core technology of sodium Doppler lidar. Here, a high gain fiber-solid hybrid amplifier seeded by a 1319 nm distributed-feedback laser diode (DFB-LD) is proposed to achieve high-power amplification of small signal 1319 nm pulse laser. A pulsed 1319 nm laser with a repetition frequency of 500 Hz, a pulse duration of 500 ns, an energy of 10.3 mJ and a linewidth of 1.9 MHz was developed by utilizing a three-stage fiber coupled end-pumped amplifier and a two-stage Innoslab amplifier, and the beam quality factor M2 is less than 1.6, the gain of the solid amplification system exceeds 28 dB.
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关键词
lidar,laser,fiber-solid,single-frequency
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