Modeling and Measurements of the Radiative Characteristics of High-Power α-DFB Lasers
K. Paschke1 , A. Bogatov2, A.E. Drakin2, R. Güther1, A.A. Stratonnikov2, H. Wenzel1, G. Erbert1, and G. Tränkle1
Published in:
IEEE Journal of Selected Topics in Quantum Electronics, Vol. 9, No. 3, pp. 835-843, 2003.
Abstract:
A new above-threshold model of α-DFB lasers is presented. It is based on a generalized beam-propagation method and takes into account spatial hole burning and self-heating effects. Up to moderate output powers, a good agreement between simulated and measured radiative characteristics is obtained. The theoretical model was used to design an optimized laser structure with a 4-mm-long cavity, which yielded a maximum output power of 3 W with a times-diffraction-limit factor of M2 ≈ 3.
1 Ferdinand-Braun-Institut für Höchstfrequenztechnik, D-12489 Berlin, Germany
2 P.N. Lebedev Physical Institute, 119991 Moscow, Russia
Index Terms:
distributed feedback laser (α-DFB laser), high brightness, high-power semiconductor laser, modeling, simulation, slanted Bragg grating, spectrum.
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