The concept and the realization of the high-power laser diodes with multi-stripe-gain distribution

Grzegorz Tadeusz Sobczak, Elżbieta Dąbrowska, Marian Teodorczyk, Konrad Krzyżak, Joanna Kalbarczyk, Andrzej Maląg


The slow axis far-field widening (far-field blooming) is one of the factors, which decrease the quality of the emitted beam of high-power laser diodes. This effect is connected with rising number of maintained lateral optical modes in the laser waveguide. In this paper the design of the gain distribution by the steering of current flow is presented as a way to restrict the far-field blooming. The numerical and experimental results are presented. The almost constant slow-axis width of the optical field distribution in the far-field is obtained up to four times above the threshold current.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
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