1. THz quantum cascade lasers based on a hyperuniform design
- Author
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Harvey E. Beere, Yash D. Shah, D. S. Jessop, Alberto Ronzani, Riccardo Degl'Innocenti, Alessandro Tredicucci, Yuan Ren, David A. Ritchie, Alessandro Pitanti, Luca Masini, Razeghi, Manijeh, Tournié, Eric, Brown, Gail J., Razeghi M. Tournie E. Brown G. J., Degl'Innocenti, R., Shah, Y. D., Masini, L., Ronzani, A., Pitanti, A., Ren, Y., Jessop, D. S., Tredicucci, Alessandro, Beere, H. E., and Ritchie, D. A.
- Subjects
Materials science ,quantum cascade lasers ,business.industry ,Band gap ,Terahertz radiation ,Physics::Optics ,Quantum cascade lasers, terahertz, hyperuniform disordered distribution, photonic band gap ,Quantum cascade laser ,Laser ,photonic band gap ,law.invention ,terahertz ,Optics ,Cascade ,law ,Optoelectronics ,Photonics ,Photolithography ,business ,hyperuniform disordered distribution ,Photonic crystal - Abstract
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.
- Published
- 2015
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