© 2018 Praevium Research, Inc.

  • Grey Instagram Icon

Meter-range volumetric imaging with 15µm resolution

May 30, 2017

Dr. Zhao Wang and the group of James G. Fujimoto at MIT recently published a groundbreaking Optica paper in which 3D tomographic volumetric imaging (OCT imaging) was performed over a full one-meter-cubed volume, with 15 micron axial resolution.

 

The results were also presented at SPIE Photonics West 2016 BIOS - view his entire presentation with your conference login: 

Miniaturized silicon photonic integrated swept source OCT receiver with dual polarization, dual balanced, in-phase and quadrature detection (Conference Presentation), Proc. SPIE 9697

The astonishing result was enabled by a Praevium 1310nm MEMS-VCSEL laser light source, which has been shown to have an optical coherence length of hundreds of meters [JLT 2015]. Typical OCT light sources have coherence lengths in the millimeter range, rendering such long-range imaging unfeasible. In addition, the extremely high-speed detection required for acquiring the long-range interferogram was enabled by an Acacia Networks silicon-photonics dual-quadrature receiver chip.

 

Tomographic imaging captures high-resolution details within and through the objects, not just surface topology. These bottles are situated in front of a metal plate; color-coding indicates depth of the detected surface.

 

Animated cross-sectioning of a skull, illustrating the post-processing analysis that can be performed on the volumetric data.

Summaries of the result and it's impact on industrial imaging have been printed in numerous publications:

 

 

 

 

 

 

Please reload

Recent Posts
Please reload

Archive
Please reload

Search By Tags
Please reload

Follow Us
  • Facebook Basic Square
  • Twitter Basic Square
  • Google+ Basic Square