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Updated: May 28, 2026

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Field-programmable gate array based locking circuit for external cavity diode laser frequency stabilization
Arne Schwettmann1, Jonathon Sedlacek, James P Shaffer
1The University of Oklahoma, Homer L. Dodge Department of Physics and Astronomy, Norman, Oklahoma 73019, USA.
The Review of Scientific Instruments
|November 4, 2011
Abstract:
We present a locking circuit for external cavity diode lasers implemented on a field-programmable gate array (FPGA). The main advantages over traditional non-FPGA-based locking circuits are rapid reconfigurability without any soldering and a friendly user interface. We characterize the lock quality by measuring the linewidth of a locked laser using electromagnetically induced transparency in a Rb vapor cell.

