Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

The role of different types of dopants in 1.3 μm InAs/GaAs quantum-dot lasers

Deng, Huiwen, Jarvis, Lydia, Li, Zhibo ORCID:, Liu, Zizhuo, Tang, Mingchu, Li, Keshuang ORCID:, Yang, Junjie, Maglio, Benjamin, Shutts, Samuel ORCID:, Yu, Jiawang, Wang, Lingfang, Chen, Siming, Jin, Chaoyuan, Seeds, Alwyn, Liu, Huiyun and Smowton, Peter M. ORCID: 2022. The role of different types of dopants in 1.3 μm InAs/GaAs quantum-dot lasers. Journal of Physics D: Applied Physics 55 (21) , 215105. 10.1088/1361-6463/ac55c4

[thumbnail of Published.pdf]
PDF - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview


The performance of O-band InAs/GaAs quantum-dot (QD) lasers grown by molecular beam epitaxy with three different doping strategies in the active region are investigated for a temperature range of 17 °C–97 °C. The lasing performance indicates that the n-type doping technique reduced the threshold current density of InAs QD lasers across the full temperature range and narrowed the near field lasing spot. However, for short-cavity lasers, the n-type doped laser switches from ground-state to excited-state lasing at a lower temperature compared to undoped and p-type modulation-doped lasers. In contrast, the p-type modulation-doped lasers have a reduced threshold current density for higher temperatures and for shorter lasers with cavity lengths of 1 mm and below

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Additional Information: Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.
Publisher: IOP Publishing
ISSN: 0022-3727
Date of First Compliant Deposit: 17 March 2022
Date of Acceptance: 16 February 2022
Last Modified: 10 May 2023 22:12

Citation Data

Cited 2 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics