Precision laser interferometry for inertial sensing

Dr. Felipe Guzman
Professor & Jewell Endowed Chair
LASSO - Laboratory of Space Systems and Optomechanics
University of Arizona

E-Mail: felipeguzman@arizona.edu

Abstract:

Precision displacement laser interferometry is a crucial and enabling technology in a wide spectrum of applications such as microlithography, high-performance profilometry, gravitational wave observation, and, generally, laser diagnostics. 

One of our main research thrusts at the Laboratory of Space Systems and Optomechanics (LASSO) at the University of Arizona is the development of novel approaches for displacement laser interferometers that are highly compact and are capable of maintaining high sensitivity over a large dynamic range. 

I will introduce our work on the development of compact monolithic laser interferometer heads, as well as fiber-based multi-color fiber interferometers with low noise floors. In addition, I will discuss some of the error and noise sources that affect these types of interferometers, as well as mitigation strategies we have developed to reduce their impact and improve the overall performance of the instruments. 

Lastly, I will present some of the sensing instruments where we use these laser displacement interferometers and the context of their use in ground applications and space missions, as well as inertial, and quantum sensing.