Self-Aligned Photonic Defect Microcavity Lasers with Site-Controlled Quantum Dots

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F24%3AN0000058" target="_blank" >RIV/00177016:_____/24:N0000058 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/24:00135636

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/lpor.202301242" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/lpor.202301242</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/lpor.202301242" target="_blank" >10.1002/lpor.202301242</a>

Result language

angličtina

Original language name

Self-Aligned Photonic Defect Microcavity Lasers with Site-Controlled Quantum Dots

Original language description

Self-assembled semiconductor quantum dots face challenges in terms of scalable device integration because of their random growth positions, originating from the Stranski–Krastanov growth mode. Even with existing site-controlled growth techniques, for example, nanohole or buried stressor concepts, a further lithography and etching step with high spatial alignment requirements is necessary to accurately integrate quantum dots into the nanophotonic devices. Here, the fabrication and characterization of strain-induced site-controlled microcavities are reported, where site-controlled quantum dots are positioned at the antinode of the optical mode field in a self-aligned manner without the need of any further nano-processing. It is shown that the cavity properties such as Q-factor, mode volume, and mode splitting can be tailored by the geometry of the integrated buried stressor, with an opening <4 µm. The experimental results are complemented with theory calculations based on continuum elasticity. Lasing signatures, including super-linear input-output response and linewidth narrowing, are observed for a 3.6-µm self-aligned cavity with a Q-factor of 18 000. Furthermore, the quasi-planar site-controlled cavities exhibit no detrimental thermal effects. This approach integrates seamlessly with the industrial-matured manufacturing process and the buried-stressor technique, paving the way for exceptional scalability and straightforward manufacturing of high-β microlasers and bright quantum light sources.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Quantum materials for applications in sustainable technologies</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Laser and Photonics Reviews

ISSN

18638880

e-ISSN

1863-8899

Volume of the periodical

18

Issue of the periodical within the volume

7

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

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UT code for WoS article

001181097200001

EID of the result in the Scopus database

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