Enhancing the luminescence performance in germanosilicate glasses controlled by ZnF₂

Area of Science:

• Materials Science
• Optics
• Photonics

Background:

• Rare-earth-doped optical functional glasses are crucial for optical communications and biomedical systems due to their luminescence.
• Germanosilicate glasses are a promising host material for optical applications.

Purpose of the Study:

• To investigate the effect of ZnF2 on the luminescence properties of rare-earth-doped germanosilicate glasses.
• To explore the potential of these glasses as a gain medium for mid-infrared (MIR) lasers.

Main Methods:

• Synthesis of germanosilicate glasses doped with rare-earth elements and controlled by ZnF2.
• Characterization of luminescence performance in the mid-infrared region.
• Analysis of absorption and emission cross sections for Ho3+ transitions.

Main Results:

• Achieved over a seven-fold enhancement in luminescence performance in the mid-infrared region.
• Observed larger absorption and emission cross sections for the Ho3+: 5I6→5I7 transition.
• Demonstrated the potential for high gain in germanosilicate-zinc glasses.

Conclusions:

• ZnF2 controlled germanosilicate glasses exhibit superior MIR luminescence.
• These glasses are suitable gain media for efficient 2.85 μm laser systems.
• The findings open new avenues for advanced optical and biomedical devices.