A terahertz quantum cascade laser has been realized from an isotropic disordered hyperuniform design. Such a system presents a photonic band-gap although it is characterized by an efficient depletion of the long range order. Hyperuniform patterns allow greater versatility in engineering band gaps in comparison to standard photonic-crystal materials. Bidimensional hyperuniform patterns were simulated for hexagonal tiles composed of high refractive index disks merged in a low dielectric constant polymeric matrix. Based on this design, quantum cascade lasers were fabricated by standard photolithography, metal evaporation, lift-off and dry-etching techniques in a half-stack bound to continuum active region emitting around 2.9 THz.
|Series||Proceedings of SPIE|
|Conference||SPIE OPTO, Optical Interconnects XV|
|Abbreviated title||SPIE OPTO|
|Period||7/02/15 → 12/02/15|
- quantum cascade lasers
- hyperuniform disordered distribution
- photonic band gap