Computational model of frequency stabilized laser for Extremum Seeking Controller parameter tuning



Extremum-Seeking Control, Laser frequency stabilization, Control simulation


Extremum-Seeking Control (ESC) is a technique used to stabilize systems to optimal operating conditions. The adjustment of the controller parameters is not usually reported. In this paper we present a computational model for frequency stabilization of a laser source using ESC. The model is based on a saturated absorption spectroscopy experiment used to reference the frequency of the laser light to an atomic transition in Cesium atoms. By using this model, we were able to study the performance and adjust the parameters of the controlled system. This model was succesfully validated using an experimental open loop configuration. The model was then used to predict stable configurations of the controlled system, to be implemented in the experimental setup. As a result, we were able to get the laser frequency locked to a Cs atomic transition in the laboratory with a relative stability in frequency of 6x10-8.


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Author Biographies

Nicolas Manrique, Research Assistant at Universidad de los Andes

Research assistant for the Experimental Quantum Optics laboratory at Universidad de los Andes, Bogotá, Colombia.

Carlos F. Rodriguez, Associate Professor (Mechanical Engineering)

Associate Professor for the Mechanical Engineering department at Universidad de los Andes.

Mayerlin Nuñez Portela, Associate Professor (Physics)

Associate Professor for the Physics department at Universidad de los Andes, Bogotá, Colombia.


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How to Cite

Manrique Nieto, N., Rodriguez, C. F., & Nuñez Portela, M. (2021). Computational model of frequency stabilized laser for Extremum Seeking Controller parameter tuning. IEEE Latin America Transactions, 20(3), 451–457. Retrieved from