Zachary Simmons, Ph.D.

Assistant Professor

  • Milwaukee WI UNITED STATES
  • Physics and Chemistry

Dr. Zach Simmons is an optical physicist with experience in atomic systems, lasers, microscopy, and light-scattering.

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Education, Licensure and Certification

Ph.D.

Physics

University of Wisconsin - Madision

2015

B.S.

Physics & Electrical Engineering

The University of St. Thomas

2007

Biography

Dr. Zach Simmons is an optical physics with experience in atomic systems, lasers, microscopy, and light-scattering. Simmons' research focuses on the interface of precision approaches from atomic physics with the broad applications of microscopy and biology.

https://scholar.google.com/

Areas of Expertise

Light-Scattering
Lasers
Optical Physics
Atomic Systems
Microscopy

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Selected Publications

Microscope objective based 4π spectroscopic tissues scattering goniometry

Biomedical Optics Express

Z.J. Simmons and J.D. Rogers

2017-01-01

The measurement of optical scattering as a function of angle, goniometry, can provide a wealth of information about tissue. The goniometry technique described here measures the intensity profile at the pupil planes of two microscope objectives with a scattering sample between them. The maximum observable scattering angle is extended by employing off-axis illumination. This configuration permits several advantages including: i) rapid measurement of scattering into 4π sr to characterize the entire scattering phase function in isotropic tissue, ii) sensitivity to axially asymmetric scattering from anisotropic fibrous tissue, iii) selective interrogation of small regions within spatially inhomogenous tissue, iv) concurrent measurement of scattering coefficient μs, and v) measurement of wavelength dependent scattering properties via spectrally tunable source. The instrument is validated by comparing measurements of microsphere suspensions to the Mie scattering solution. Instrument capabilities are demonstrated with samples of rat brain and mouse eye tissues.

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