Sub-monolayer quantum dots in confinement enhanced dots-in-a-well heterostructure

S Sengupta, JO Kim, AV Barve, S Adhikary… - Applied Physics …, 2012 - pubs.aip.org
We have investigated optical properties and device performance of sub-monolayer quantum
dots infrared photodetector with confinement enhancing (CE) barrier and compared with …

A detailed study of the effects of rapid thermal annealing on the luminescence properties of InAs sub-monolayer quantum dots

A Manohar, S Sengupta, H Ghadi… - Journal of Luminescence, 2015 - Elsevier
We studied the effects of post-growth annealing on InAs sub-monolayer samples with
different numbers of quantum dot stacks embedded in InGaAs wells. Four samples, with 4, 6 …

Comprehensive study on molecular beam epitaxy-grown InAs sub-monolayer quantum dots with different capping combinations

S Sengupta, A Mandal, H Ghadi… - Journal of Vacuum …, 2013 - pubs.aip.org
Here the authors report a comprehensive study on InAs sub-monolayer quantum dots with
different capping layers. After performing systematic optimization of InAs deposition and …

High-speed InAs quantum dot photodetectors for data/telecom

A Cola, G Leo, A Convertino, A Persano, F Quaranta… - Photodetectors, 2023 - Elsevier
The extraordinary properties of quantum dots (QDs) have been intensively investigated
since the 1990s, with particular emphasis on their wide range of applications to information …

[PDF][PDF] 光子晶体垂直腔面发射激光器的研究进展

王华勇, 许兴胜 - 激光与光电子学进展, 2012 - researching.cn
摘要单模垂直腔面发射激光器(VCSEL) 具有低功耗, 小发散角, 高调制带宽和易于二维集成等
优点, 在光互连, 光存储, 高速激光打印和长波通讯等方向有着很好的应用前景. 调节VCSEL …

Structural, Optical and Spectral Behaviour of InAs-Based Quantum Dot Heterostructures

S Sengupta, S Chakrabarti - 2018 - Springer
This monograph is based on research into the structural, optical and spectral properties of
InAs/(In)(Al) GaAs quantum dot (QD) heterostructures, grown by using molecular beam …

Dynamic characteristics and linewidth enhancement factor of quantum-dot vertical-cavity surface-emitting lasers

PC Peng, G Lin, HC Kuo, CE Yeh… - IEEE Journal of …, 2009 - ieeexplore.ieee.org
This study explores the relative intensity noise characteristics of quantum-dot vertical-cavity
surface-emitting lasers (QD VCSELs). The resonance frequency and eye diagram are …

Influence of Sb accumulation on the inter-band and inter-subband transitions of InAs/GaAs1-x Sbx sub-mono layer (SML) quantum dot heterostructures

S Das, J Saha, SR Shriram, S Chakrabarti - Superlattices and …, 2020 - Elsevier
The possibilities of employing InAs sub-mono layer (SML) quantum dots (QD) as long
wavelength sources and infrared photodetectors have been explored in this work. To …

Optical and Spectral Characterization of Sub-monolayer QDIPs

S Sengupta, S Chakrabarti, S Sengupta… - Structural, Optical and …, 2018 - Springer
In this chapter, we have explored the properties of an unconventional type of quantum dots,
namely sub-monolayer (SML) quantum. We have performed a systematic study to optimize …

Wavelength switching based on quantum-dot vertical-cavity surface-emitting laser

PC Peng, HY Wang, RL Lan, HH Lu, GR Lin, G Lin… - Laser Physics, 2012 - Springer
This study investigates, for the first time, static and dynamic wavelength switching
characteristics of the 1.3 μm quantum-dot vertical-cavity surface-emitting laser (QD VCSEL) …