Abstract
This paper presents a coupled-wave analysis of triangular-lattice photonic crystal surface emitting lasers (PCSELs) with transverse magnetic polarization. Six plane waves coupled by Bragg diffraction describe the two-dimensional optical coupling. Resonant mode frequencies are calculated for a lattice of circular holes at various fill factors and compared to the plane-wave expansion method. Analytical equations for coupling constants and mode frequencies are derived, and mode degeneracy as a function of fill factor is examined. Comparision to a square lattice TM mode PCSEL shows improved in-plane 2D coupling. The general equations for arbitrary unit cell dielectric functions are discussed, with predictions of the lasing mode supported by finite device calculations.
| Original language | English |
|---|---|
| Article number | 1700811 |
| Number of pages | 11 |
| Journal | IEEE Journal of Selected Topics in Quantum Electronics |
| Volume | 31 |
| Issue number | 2 |
| Early online date | 20 Nov 2024 |
| DOIs | |
| Publication status | Published - Mar 2025 |
Bibliographical note
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- Lattices
- Continuous wavelet transforms
- Couplings
- Vectors
- Photonic crystals
- Surface emitting lasers
- Mathematical models
- Laser modes
- Distributed feedback devices
- Three-dimensional displays