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Updated: Jul 3, 2026
09:10
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
An ultrahigh stability, low-noise laser current driver with digital control.
Christopher J Erickson1, Marshall Van Zijll, Greg Doermann
1Department of Physics and Astronomy, Brigham Young University, Provo, Utan 84602, USA.
The Review of Scientific Instruments
|August 7, 2008
Summary
We developed a stable laser current driver with digital control for precise, repeatable performance. This improved design minimizes noise and phase lag, enhancing laser system accuracy and stability.
Area of Science:
- Physics
- Electrical Engineering
- Optics
Background:
- Laser systems require stable and precise current drivers for optimal performance.
- Existing designs like the Hall-Libbrecht driver have limitations in noise and stability.
- Remote digital control offers potential for improved accuracy and reduced system complexity.
Purpose of the Study:
- To present a novel laser current driver design with low noise and high modulation bandwidth.
- To improve upon the stability and accuracy of existing laser current drivers.
- To enable remote digital control for enhanced repeatability and performance.
Main Methods:
- Design and implementation of a new laser current driver circuit.
- Integration of a microprocessor unit for digital set-point control.
- Comprehensive characterization of driver performance, including stability, noise, accuracy, and bandwidth.
Main Results:
- The developed driver exhibits low noise and high modulation bandwidth.
- Excellent long-term stability and precise set-point repeatability were achieved.
- Digital control via a microprocessor unit significantly improved accuracy and stability.
Conclusions:
- The novel laser current driver design offers superior performance compared to traditional methods.
- Remote digital control enhances laser system precision, stability, and ease of use.
- This driver is suitable for applications demanding high-performance laser current control.
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