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Updated: Jun 5, 2026

Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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Integrated Nd-doped borosilicate glass microsphere laser.

Ganapathy Senthil Murugan1, Michalis N Zervas, Yuwapat Panitchob

  • 1Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, UK. smg@orc.soton.ac.uk

Optics Letters
|January 7, 2011
PubMed
Summary

A neodymium-doped BK7 glass microsphere laser was integrated with a waveguide for optical circuits. This study clarifies whispering-gallery-mode behavior for integrated laser applications.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Microsphere lasers offer high-quality optical resonators.
  • Integrated optics require efficient coupling between components.

Purpose of the Study:

  • To demonstrate a neodymium-doped BK7 glass microsphere laser integrated with a waveguide.
  • To investigate whispering-gallery-mode behavior in such integrated systems.

Main Methods:

  • Evanescent coupling of pump radiation from a waveguide to a microsphere.
  • Utilizing the same waveguide for signal radiation output.
  • Studying lasing spectra dependence on pump power and wavelength.

Main Results:

  • Successful demonstration of a waveguide-coupled microsphere laser.

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  • Detailed analysis of whispering-gallery-mode characteristics.
  • Potential for robustly assembled, fully integrated active optical circuits.

    • Conclusions:

    • The integrated microsphere laser system shows promise for advanced optical circuits.
    • Understanding mode behavior is crucial for optimizing integrated laser performance.