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Related Experiment Video

Updated: May 28, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Note: updates to an ultra-low noise laser current driver.

Daylin L Troxel¹, Christopher J Erickson, Dallin S Durfee

¹BYU Department of Physics and Astronomy and Brigham Young University, Provo, Utah 84602, USA.

The Review of Scientific Instruments

|October 7, 2011

Summary

This summary is machine-generated.

This study presents an improved driver design with higher output currents and enhanced digital interfacing. New measurements reveal the driver

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

Area of Science:

Electrical Engineering
Instrumentation and Measurement

Background:

Current driver designs have limitations in output current and digital interfacing.
Accurate measurement of noise spectral density is crucial for driver performance evaluation.

Purpose of the Study:

To introduce design updates for a driver enabling higher positive and negative output currents.
To implement updated digital interfacing for microcontroller integration.
To refine the measurement technique for noise spectral density and report lower actual current noise.

Main Methods:

Modified driver circuitry for increased current handling.
Updated digital communication protocols for microcontroller interaction.
Advanced measurement techniques for characterizing noise spectral density.

Main Results:

The updated driver design supports significantly higher output currents.
Enhanced digital interfacing improves control and integration capabilities.
Noise spectral density measurements indicate current noise is an order of magnitude lower than previously estimated.

Conclusions:

The revised driver design offers superior performance in terms of output current and noise characteristics.
The improved measurement technique provides a more accurate assessment of driver noise.
These advancements are critical for applications requiring precise current control.