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Opportunity at National Institute of Standards and Technology (NIST)

Precision Interferometry for Realization of the Meter


Physical Measurement Laboratory, Engineering Physics Division

RO# Location
50.68.31.B8219 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.


Name E-mail Phone
Egan, Patrick 301.975.4151


We design and build (macroscopic) interferometers with the goal of realizing the meter in air to better than 1 part in 10^8. Our effort chiefly uses two technologies: an optical frequency comb to measure vacuum wavelength and a Fabry-Perot cavity to measure air refractivity. We are currently investigating ways of using the highest accuracy measurements of gas refractivity to realize the pascal and kelvin. We are also interested in exploring how our techniques might perform on the microscale (i.e., interferometer-on-a-chip).



Egan PE, et al: Optics Letters 37: 4991-4993, 2012

Egan PE, et al: Optics Letters 40: 3945-3948, 2015


Interferometry; Fabry-Perot; Length metrology; Pressure measurement; Optical frequency comb; Refractometry;


Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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