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- W2023585958 abstract "For high-power semiconductor lasers, asymmetric reflectivities of facets are employed in order to improve slope efficiency. Cavity lengths of these laser diodes have been increased to better distribute heat in order to improve output power. However, these two methods result in an inhomogeneous longitudinal profile of photon density, which leads to a nonuniform gain profile and is typically referred to as longitudinal spatial hole burning (LSHB). In this work, we developed a model to self-consistently calculate the longitudinal photon density distribution, carrier density distribution, and gain distribution in a high-power semiconductor laser. The calculation is based on modified rate equations, and a finite difference method is used to solve the differential equations. Newton’s method is employed to obtain final results with residual error below 10<sup>-6</sup>. The impact of LSHB was analyzed with different parameters, and we demonstrate that LSHB is expected to limit the maximum achievable output power of semiconductor lasers having cavity lengths in excess of several mm. The results are expected to be useful in the optimization of high-power semiconductor laser designs." @default.
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- W2023585958 date "2014-05-02" @default.
- W2023585958 modified "2023-09-23" @default.
- W2023585958 title "Rate equation analysis of longitudinal spatial hole burning in high-power semiconductor lasers" @default.
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- W2023585958 doi "https://doi.org/10.1117/12.2048908" @default.
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