Ultrafast Laser Inscription of Mid-Infrared Waveguides in Pr3+-doped Sulfide Glasses

Key Points

• Mid-infrared waveguides were produced using ultrafast laser inscription techniques, achieving a hexagonal mesh structure.
• The waveguides display broadband emissions ranging from 3.5 to 5.5 µm, with significant implications for optical technologies.
• Characterization was performed using micro-Raman and micro-luminescence spectroscopy, confirming their performance in mid-infrared ranges.
• Highlights the potential of Pr3+-doped sulfide glasses for future developments in mid-infrared optical devices.