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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00216224:14310/24:00135636

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Kvantové materiály pro aplikace v udržitelných technologiích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Laser and Photonics Reviews

ISSN

18638880

e-ISSN

1863-8899

Svazek periodika

18

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001181097200001

EID výsledku v databázi Scopus

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