title: Hyperuniform disordered terahertz quantum cascade laser.
abstract: Laser cavities have been realized in various different photonic systems. One of the forefront research fields regards the investigation of the physics of amplifying random optical media. The random laser is a fascinating concept because, further to the fundamental research investigating light transport into complex media, it allows us to obtain non-conventional spectral distribution and angular beam emission patterns not achievable with conventional approaches. Even more intriguing is the possibility to engineer a priori the optical properties of a disordered distribution in an amplifying medium. We demonstrate here the realization of a terahertz quantum cascade laser in an isotropic hyperuniform disordered distribution exhibiting unique features, such as the presence of a photonic band gap, low threshold current density, unconventional angular emission and optical bistability.
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: R
authors.initials: R
authors.lastname: Degl'Innocenti
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: Y D
authors.initials: YD
authors.lastname: Shah
authors.affiliation: NEST, Istituto Nanoscienze - CNR and Scuola Normale Superiore, Piazza San Silvestro 12, Pisa, 56127, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Masini
authors.affiliation: NEST, Istituto Nanoscienze - CNR and Scuola Normale Superiore, Piazza San Silvestro 12, Pisa, 56127, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Ronzani
authors.affiliation: NEST, Istituto Nanoscienze - CNR and Scuola Normale Superiore, Piazza San Silvestro 12, Pisa, 56127, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Pitanti
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: Y
authors.initials: Y
authors.lastname: Ren
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: D S
authors.initials: DS
authors.lastname: Jessop
authors.affiliation: Dipartimento di Fisica "E. Fermi" Universita' di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Tredicucci
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: H E
authors.initials: HE
authors.lastname: Beere
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
authors.forename: D A
authors.initials: DA
authors.lastname: Ritchie