title: Noise reduction of a Libbrecht-Hall style current driver.
abstract: The Libbrecht-Hall circuit is a well-known, low-noise current driver for narrow-linewidth diode lasers. An important feature of the circuit is a current limit to protect the laser diode. As the current approaches the maximum limit, however, the noise in the laser current increases dramatically. This paper documents this behavior and explores simple circuit modifications to alleviate this issue.
authors.affiliation: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208-3112, USA.
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Seck
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular and Quantum Science, 1274 University of Oregon, Eugene, Oregon 97403-1274, USA.
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Martin
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular and Quantum Science, 1274 University of Oregon, Eugene, Oregon 97403-1274, USA.
authors.forename: Eryn C
authors.initials: EC
authors.lastname: Cook
authors.affiliation: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208-3112, USA.
authors.forename: Brian C
authors.initials: BC
authors.lastname: Odom
authors.affiliation: Department of Physics and Oregon Center for Optical, Molecular and Quantum Science, 1274 University of Oregon, Eugene, Oregon 97403-1274, USA.
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Steck