Design optimization for bright electrically-driven quantum dot single-photon sources emitting in telecom O-band | Zendy

S. A. Blokhin | Zendy; M. A. Bobrov | Zendy; N. A. Maleev | Zendy; Jan N. Donges | Zendy; Leon Bremer | Zendy; A. A. Blokhin | Zendy; А. П. Васильев | Zendy; A. G. Kuzmenkov | Zendy; E. S. Kolodeznyi | Zendy; V. A. Shchukin | Zendy; N. N. Ledentsov | Zendy; Stephan Reitzenstein | Zendy; V. M. Ustinov | Zendy

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Design optimization for bright electrically-driven quantum dot single-photon sources emitting in telecom O-band

Author(s) -

S. A. Blokhin,

M. A. Bobrov,

N. A. Maleev,

Jan N. Donges,

Leon Bremer,

A. A. Blokhin,

А. П. Васильев,

A. G. Kuzmenkov,

E. S. Kolodeznyi,

V. A. Shchukin,

N. N. Ledentsov,

Stephan Reitzenstein,

V. M. Ustinov

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.415979

Subject(s) - optics , photon , fiber bragg grating , optoelectronics , materials science , quantum dot , broadband , physics , optical fiber

A combination of advanced light engineering concepts enables a substantial improvement in photon extraction efficiency of micro-cavity-based single-photon sources in the telecom O-band at ∼1.3 µm. We employ a broadband bottom distributed Bragg reflector (DBR) and a top DBR formed in a dielectric micropillar with an additional circular Bragg grating in the lateral plane. This device design includes a doped layer in pin-configuration to allow for electric carrier injection. It provides broadband (∼8-10 nm) emission enhancement with an overall photon-extraction efficiency of ∼83% into the upper hemisphere and photon-extraction efficiency of ∼79% within numerical aperture NA=0.7. The efficiency of photon coupling to a single-mode fiber reaches 11% for SMF28 fiber (with NA=0.12), exceeds 22% for 980HP fiber (with NA=0.2) and reaches ∼40% for HNA fiber (with NA=0.42) as demonstrated by 3D finite-difference time-domain modeling.

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