Lasers Based on Gas or Liquid Filled Hollow-Core Photonic Crystal Fibers

We propose a compact, monolithic, power scalable, hollow core fiber-gas laser emitting in the atmospheric transmission region in the mid-IR. The proposed optically pumped fiber-gas laser system is efficient, has a small footprint as well has a broad spectral coverage in the mid-IR. Due to the unique approach employed, the proposed technology allows generation of mid-IR output with varying pulse repetition rates and energies, as well as can produce CW outputs. Further, the technology can be refined to generate diffraction-limited output in the mid-IR region.