Abstract
We demonstrate multiple and colorful cone-shaped lasing from dual-periodic photonic crystal, indicating that coupling occurs between the photonic bands in a photonic crystal laser system. We propose a band-coupling model to estimate lasing wavelengths and emission-cone angles, which match well those from experimental observations from cone-shaped lasing. Band coupling may yield a high optical-conversion efficiency in photonic crystal laser systems, and be of interest in quantum optics communication.
Highlights
Photonic crystals (PCs)[1] and those with defects[2] provide high-quality resonators, small group velocities, and high photon density of states necessary in developing high performance laser systems
We suggest that the optical efficiency in a photonic crystal laser system could be improved because two dispersion bands influence radiation of the specific frequency inside the PC
We present an experimental observation of multiple and colorful cone-shaped lasing from dye-doped dual-periodic photonic crystal, demonstrating that band coupling occurs in photonic laser systems
Summary
Photonic crystals (PCs)[1] and those with defects[2] provide high-quality resonators, small group velocities, and high photon density of states necessary in developing high performance laser systems. Multiple and colorful cone-shaped lasing induced by band-coupling in a 1D dualperiodic photonic crystal Recent studies reported experimental observations of a cone laser in a one-dimensional (1D) PC13 and a star-like lasing pattern in 2D/3D photonic quasicrystals[14,15] that could have been generated through band coupling.
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