THz quantum cascade lasers based on a hyperuniform design

Degl'Innocenti, Riccardo and Shah, Y. D. and Masini, L. and Ronzani, A. and Pitanti, A. and Ren, Y. and Jessop, D. S. and Tredicucci, A. and Beere, H. E. and Ritchie, D. A. (2015) THz quantum cascade lasers based on a hyperuniform design. Proceedings of SPIE, 9370. ISSN 0277-786X

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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.

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Proceedings of SPIE
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10 Jan 2018 14:08
Last Modified:
22 Nov 2022 05:21