Bacterial foraging optimization algorithm (BFOA)‎ to simulate thermal distribution in YB : YAG laser thin disk

Abstract EN

There is a strong need for an optimized management of the thermal problem in Yb : YAG laser rod and for a powerful, fast, and accurate modeling tool capable of treating the heat source distribution very close to what it actually is.

In this paper, a new optimization algorithm called Bacterial Foraging Optimization Algorithm (BFOA) is proposed for simulation of the radial heat distribution.

A BFOA discloses a simulation method which delivers the exact temperature distribution in a circularly cylindrical structure with a circularly symmetrical, longitudinally, and transversally non-uniform heat source distribution and circularly symmetrical cooling means.

Its rod was end pumped with 940 nm and it has been tested with pump power ranging from 1 Kw to 2Kw for radius pumping ratio of 1 / 2, 1 / 3, and 1 / 4, for both Top hat and Gaussian beam pumping .

The output power is obtained and compared with previously published experimental measurements for different pump power and a good agreement has been found.