One millijoule mid-IR nanosecond pulses at ∼2.78 µm in a robust single transverse mode from a coiled 46 µm core low-NA Er:ZBLAN fiber amplifier.

• Tác giả: Yu Bai, Yifan Cui, Weizhi Du, Almantas Galvanauskas, Bohan Zhou
• Ngôn ngữ: eng
• Ký hiệu phân loại: 788.93 *Trombones
• Thông tin xuất bản: United States : Optics letters , 2025
• Bộ sưu tập: NCBI
• ID: 89202

Tóm tắt

We demonstrate high-energy nanosecond pulse amplification at ∼2.78 µm in a robust single transverse mode from a coiled large core low-numerical aperture (NA) Er:ZBLAN fiber amplifier. The highest energy achieved is 1.01 mJ from a 46 µm core Er:ZBLAN fiber, seeded with a preamplifier in a single-mode fiber 30 ns long pulses from a ring-cavity Q-switched Er:ZBLAN fiber laser. Near-diffraction-limited beams with M