Design of very-large area photonic crystal surface emitting lasers with an all-semiconductor photonic crystal
B. King1, H. Wenzel1, E. Kuhn2, M. Radziunas2, and P. Crump1
Published in:
Opt. Express, vol. 32, no. 25, pp. 44945-44957, doi:10.1364/OE.537452 (2024).
Abstract:
We report on the design of a photonic crystal surface emitting laser (PCSEL) with an all-semiconductor (InGaP/GaAs) photonic crystal suitable for very-large-area emission and high-power operation. Using coupled-wave theory for PCSELs we model infinite- and finite-size cavity PCSELs and show that a photonic crystal unit cell with square lattice periodicity and a rotated and stretched triangular feature is suitable for the realization of PCSELs with very large areas (1 mm< L < 3 mm for a square cavity of size L × L) while maintaining high mode discrimination between the fundamental laser mode and higher order cavity modes as well as high external efficiency. This was achieved by exploiting a single-lattice photonic crystal unit cell design that minimizes one-dimensional coupling in the photonic crystal, providing a promising alternative to double-lattice PCSELs.
1 Ferdinand-Braun-Institut (FBH), Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
2 Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Mohrenstraβe 39, 10117 Berlin, Germany
Topics:
Diode lasers, Distributed feedback lasers, Laser coupling, Laser modes, Photonic crystals, Surface emitting lasers
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