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Multifunction interferometry using the electron mobility visibility and mean free path relationship.

N Pornsuwancharoen1,2, P Youplao3, I S Amiri4

  • 1Computational Optics Research Group, Advanced Insitute of Materials Science, Ton Duc Thang University, District 7, Ho Chi Minh City, Vietnam.

Microscopy Research and Technique
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Summary
This summary is machine-generated.

This study modifies a Michelson interferometer using silicon-graphene-gold layers to detect changes in electron mobility. The enhanced system achieves high measurement resolution for optical path difference, enabling new detection capabilities.

Keywords:
electro optic sensorselectron mobilityinterferometric sensorsmultifunction interferometry

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Area of Science:

  • Optoelectronics
  • Nanotechnology
  • Condensed Matter Physics

Background:

  • Conventional Michelson interferometers are foundational optical tools.
  • Integrating novel materials like graphene and gold offers new functionalities.
  • Understanding light-matter interactions at the nanoscale is crucial for advanced devices.

Purpose of the Study:

  • To modify a Michelson interferometer for enhanced sensing capabilities.
  • To investigate the relationship between optical path difference and electron mobility.
  • To explore novel detection schemes for polarized light, photons, and electron spins.

Main Methods:

  • Modification of a standard Michelson interferometer with silicon-graphene-gold layered structures.
  • Input of monochromatic light into a silicon waveguide.
  • Utilizing changes in optical path difference to modulate electron mean free path and mobility in a gold layer.
  • Introduction of plasmonic waves on graphene for light-electron energy conversion.

Main Results:

  • Achieved a measurement resolution of 50 nm for optical path difference.
  • Demonstrated that changes in optical phase affect electron mobility, observable via interferometer output visibility.
  • Successfully linked interference fringe visibility and mobility visibility to distinct output signals.

Conclusions:

  • The modified Michelson interferometer provides a versatile platform for nanoscale measurements.
  • This approach enables the detection of polarized light, photon, and electron spin outputs.
  • The integration of plasmonics and interferometry opens new avenues in optoelectronic sensing.