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Radial IR-GRIN lens prepared by multi-temperature fields manipulated gradient crystallization within chalcogenide glass

Optics Express +

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June 11, 2024

|

June 11, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Researchers developed a new method for creating radial infrared gradient refractive index (IR-GRIN) lenses using chalcogenide glass. This technique achieves a radial GRIN profile with high refractive index, offering potential for advanced optical designs.

Area Of Science

  • Materials Science
  • Optical Engineering
  • Nanotechnology

Background

  • Chalcogenide glasses are established for axial IR-GRIN lenses.
  • Radial IR-GRIN lenses are optically advantageous but less studied.
  • Existing methods for radial GRIN lenses are limited.

Purpose Of The Study

  • To develop a novel method for preparing radial-type IR-GRIN lenses.
  • To create a gradient refractive index profile in chalcogenide glass.
  • To demonstrate the potential for large-scale production of these lenses.

Main Methods

  • Fabrication of a 65GeS2-25In2S3-10CsCl (GIC) glass matrix.
  • Introduction of indium sulfide (In2S3) nanocrystals.
  • Application of multi-temperature field manipulation for controlled crystallization.

Main Results

  • Achieved central crystallization with gradient attenuation towards the edge in GIC glass.
  • Generated a radial GRIN profile with a refractive index change (Δn) exceeding 0.1.
  • Maintained excellent infrared transparency in the prepared samples.
  • Confirmed radial gradient crystallization indirectly via Raman intensity analysis.

Conclusions

  • The new method successfully produces radial IR-GRIN lenses with tunable refractive indices.
  • The process demonstrates excellent reproducibility and scalability for industrial applications.
  • This advancement opens new possibilities for designing advanced infrared optical systems.