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Journal of Undergraduate Research

Keywords

low-noise laser, interferometer, current driver

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

Abstract

Our lab has designed a new low-noise laser current driver to be used in precision optical measurements. It has more stability and less noise than any other driver with published data. I was able to assemble and test this driver for our lab and take a precise measurement of the noise spectrum. The accuracy and stability of this driver will make possible new measurements that can potentially open new fields in physics. Using the new current driver in connection with our lab’s atom interferometer, we can obtain extreme precision in our measurements. We would be able to put new lower upper bounds on any possible photon rest mass, measure relativistic effects more precisely, measure fundamental constants, create an atomic clock, and perform other measurements. The noise data characterizing the current driver I will be taking soon is something we can publish right away. Many other labs have expressed interest in using our current driver because of its extreme stability and low noise.

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