Can underground pipes affect holographic interferometry results?

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SUMMARY

The discussion centers on the challenges faced by researchers at Illinois Wesleyan in improving image quality for a holographic speckle-pattern interferometer. The team utilizes a high-quality optics table and LabVIEW for image processing but encounters issues with image stability and resolution. Key suggestions include investigating the impact of underground pipes on vibrations, exploring the use of Pockels cells for phase modulation, and considering the effects of environmental vibrations from nearby infrastructure. The current setup operates at a resonant frequency of 1542 Hz, and the researchers are seeking actionable recommendations to enhance their results.

PREREQUISITES
  • Understanding of holographic interferometry principles
  • Familiarity with LabVIEW for image processing
  • Knowledge of Pockels cells and their applications
  • Basic concepts of vibration isolation techniques
NEXT STEPS
  • Research the effects of underground vibrations on optical setups
  • Learn about Pockels cells and their implementation in interferometry
  • Investigate advanced vibration isolation methods for optical tables
  • Explore techniques for averaging images in dynamic systems
USEFUL FOR

Researchers, optical engineers, and students involved in holographic interferometry or vibration analysis, particularly those seeking to enhance image quality in sensitive optical experiments.

  • #31
Stethoscopes are nice when trying to hunt down rogue sources of vibration too. From the sounds of it though, the building should be fairly well insulated from environmental noise.

Claude.
 
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  • #32
Something else just crossed my mind. What about underground pipes? Those can carry vibrations for miles and transfer them directly into the foundation.
 

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