Sub–single-exciton lasing using charged quantum dots coupled to a distributed feedback cavity Article Swipe
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Oleg V. Kozlov
,
Young‐Shin Park
,
Jeongkyun Roh
,
Igor Fedin
,
Tom Nakotte
,
Victor I. Klimov
·
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.1126/science.aax3489
· OA: W2967178874
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.1126/science.aax3489
· OA: W2967178874
Switching on quantum dot lasers The optical properties of quantum dots can be tailored with alterations to their size and composition. Developing quantum dots as low-threshold laser sources requires overcoming problems associated with carrier recombination and stability. Kozlov et al. report success in this direction by demonstrating that a mix of processing and postsynthesis charging can overcome these problems. Synthesis of compositionally graded core-shell quantum dots followed by a carrier charging step provides stable, low-threshold lasing. Science , this issue p. 672
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