Coherent mid-infrared supercontinuum generation in all-solid chalcogenide microstructured fibers with all-normal...

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• Supercontinuum generation is crucial for various spectroscopic and sensing applications.
• Chalcogenide microstructured fibers offer unique nonlinear optical properties for infrared applications.

Purpose of the Study:

• To demonstrate coherent mid-infrared supercontinuum generation in an all-solid chalcogenide microstructured fiber.
• To investigate the performance of a novel fiber design for extending light sources into the mid-infrared region.

Main Methods:

• Fabrication of a four-hole all-solid chalcogenide microstructured fiber with AsSe2 core and As2S5 glass rods.
• Pumping the fiber with a 2.7 μm laser to induce supercontinuum generation.
• Characterization of the generated supercontinuum spectrum.

Main Results:

• Coherent mid-infrared supercontinuum generation was successfully achieved.
• The generated supercontinuum extended to 3.3 μm.
• A 2 cm long fiber was sufficient for broadband generation.

Conclusions:

• All-solid chalcogenide microstructured fibers with all-normal dispersion are effective for mid-infrared supercontinuum generation.
• This technology enables the development of compact and efficient mid-infrared light sources.
• The results highlight the potential of chalcogenide fibers for advanced photonic applications.