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Application of VCSEL in Bio-Sensing Atomic Magnetometers.

Peng Zhou1,2, Wei Quan1,2, Kai Wei1,2

  • 1School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China.

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|December 23, 2022
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Summary

Vertical cavity surface emitting lasers (VCSELs) are crucial for chip-scale atomic devices used in biomedical imaging. This review details VCSEL applications, control, packaging, and their role in advanced magnetometers for healthcare.

Keywords:
VCSELchip-scale atomic magnetometersmagnetocardiographymagnetoencephalography

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Area of Science:

  • Atomic physics and optics
  • Biomedical engineering
  • Laser technology

Background:

  • Chip-scale atomic devices offer high-resolution biomedical imaging (magnetocardiography, magnetoencephalography).
  • Vertical cavity surface emitting lasers (VCSELs) are essential integrated pumping sources for these devices.
  • Growing interest in miniaturized, low-power, high-sensitivity biosensors for medical instrumentation and portable health monitoring.

Purpose of the Study:

  • To review the application of VCSELs in chip-scale atomic devices for biomedical sensing.
  • To discuss mode and polarization control of VCSELs in these applications.
  • To examine VCSEL packaging strategies for miniaturization and precision.

Main Methods:

  • Review of existing literature on VCSEL integration in atomic bio-sensing devices.
  • Analysis of different operating environments and their impact on VCSEL performance.
  • Discussion of packaging techniques for miniaturization and precision measurement.
  • Detailed review of VCSEL-based chip-scale atomic magnetometers for cardiac and brain applications.

Main Results:

  • VCSELs are key components in chip-scale atomic magnetometers for high-resolution magnetocardiography and magnetoencephalography.
  • Various VCSEL integration, mode/polarization control, and packaging strategies are discussed.
  • VCSEL-based devices show promise for advanced cardiac and brain magnetometry.

Conclusions:

  • VCSELs are critical for the advancement of chip-scale atomic devices in biomedical imaging.
  • The industrialization of integrated biosensors is driven by medical instrumentation and portable health monitoring markets.
  • VCSEL-integrated chip-scale atomic biosensors are poised for significant future development.