Mr. Ravindra Kumar Profile

Ravindra Kumar

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 11 March 2024 Poster + Paper

Investigation of strain propagation, optical, and structural properties of a novel heterostructure with multilayer Stranski-Krastanov (S-K) strain-coupled quantum dots (QDs)

Rajib Saha, Farheen Shamim Ahmed Sabiha, Raveesh Gourishetty, Ravindra Kumar, Amitabha Nath, Subhananda Chakrabarti

Proceedings Volume 12880, 128800X (2024) https://doi.org/10.1117/12.3013249

KEYWORDS: Heterojunctions, Quantum dots, Quantum properties, Quantum dot emission, Quantum systems, Quantum ground state, Photoluminescence, Optical properties, Monolayers, Molecular beam epitaxy

Read Abstract +

Proceedings Article | 10 October 2023 Poster + Paper

Investigation of strain profile and band-alignment study in InAs/GaAsSb quantum dot heterostructure with varying Sb content

Farheen Shamim Ahmed Sabiha, Ravindra Kumar, Raveesh Gourishetty, Rajib Saha, Manas Ranjan Mantri, Ajay Kumar, Subhananda Chakrabarti

Proceedings Volume 12687, 126870K (2023) https://doi.org/10.1117/12.2677306

KEYWORDS: Antimony, Heterojunctions, Quantum dots, Emission wavelengths, Quantum experiments, Photoluminescence, Indium arsenide, Gallium arsenide, Optoelectronic devices, Quantum numbers

Read Abstract +

Proceedings Article | 5 October 2023 Poster + Paper

A theoretical study on strain and optical property of InAs SK quantum dot with varying capping in SK-SML coupled surface quantum dot heterostructure

Manas Ranjan Mantri, Debi Prasad Panda, Ravindra Kumar, Samishta Choudhary, Subhananda Chakrabarti

Proceedings Volume 12651, 126510B (2023) https://doi.org/10.1117/12.2677964

KEYWORDS: Heterojunctions, Quantum dots, Gallium, Gallium arsenide, Aluminum, Indium arsenide, Optical properties, Quantum numbers, Optical surfaces, Indium gallium arsenide

Read Abstract +

Proceedings Article | 10 March 2023 Poster + Paper

Impact of linear alloy on strain coupled bilayer InAs/GaAs1-ySby quantum dot heterostructures

Ravindra Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 12415, 124150N (2023) https://doi.org/10.1117/12.2648919

KEYWORDS: Heterojunctions, Alloys, Quantum dots, Indium arsenide, Emission wavelengths, Gallium arsenide, Antimony

Read Abstract +

Proceedings Article | 3 October 2022 Poster + Presentation + Paper

A comparative analysis of InAs quantum dot heterostructure with equal and varying sub-capping layer thickness using digital alloy approach

Ravindra Kumar, Ajay Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 12200, 122000E (2022) https://doi.org/10.1117/12.2633322

KEYWORDS: Indium arsenide, Heterojunctions, Interfaces, Quantum dots, Gallium arsenide, Diffusion, Analog electronics, Optoelectronics, Indium gallium arsenide, Electrons

Read Abstract +

Proceedings Article | 3 October 2022 Poster + Presentation + Paper

A comparative study of Dots-in-a-Double-Well (DDWELL) heterostructures with SK, SML and coupled SK-on-SML as active region

Archishman Saha, Neelu Neelu, Ravindra Kumar, Saranya Reddy Shriram, Subhananda Chakrabarti

Proceedings Volume 12200, 122000C (2022) https://doi.org/10.1117/12.2633251

KEYWORDS: Heterojunctions, Absorption, Quantum dots, Luminescence, Indium arsenide, Sensors, Optoelectronic devices, Crystals, Security technologies, Quantum wells

Read Abstract +

Proceedings Article | 5 March 2022 Poster + Paper

A comparative study of analog, digital, and linear alloy technique on the strain and optical properties of symmetrical InGaAs/InAs/InGaAs quantum dot-in-a-well (DWELL) heterostructure

Ajay Kumar, Ravindra Kumar, Sudheendra Prabhu, Subhananda Chakrabarti

Proceedings Volume 12010, 120100E (2022) https://doi.org/10.1117/12.2610090

KEYWORDS: Heterojunctions, Analog electronics, Indium, Indium arsenide, Gallium, Optical properties, Quantum wells, Quantum well infrared photodetectors, Photodetectors, Optoelectronics

Read Abstract +

Proceedings Article | 4 March 2022 Poster + Paper

Improved structural and optical behaviour of InAs Stranski-Krastanov (SK) quantum dot heterostructures using analog, digital, and linear alloy techniques

Ajay Kumar, Sudheendra Prabhu, Ravindra Kumar, Subhananda Chakrabarti

Proceedings Volume 11995, 119950L (2022) https://doi.org/10.1117/12.2610102

KEYWORDS: Heterojunctions, Indium arsenide, Quantum dots, Optoelectronics, Optoelectronic devices, Indium, Chlorine, Absorption, Security technologies

Read Abstract +

Proceedings Article | 4 March 2022 Poster + Paper

A comparative study of single layer InAs SK, SML, and coupled SK-on-SML QDs heterostructure by incorporating InGaAsSb (Type-II) as capping layer

Samishta Choudhary, Ravindra Kumar, Manas Ranjan Mantri, Anindya Dutta, Subhananda Chakrabarti

Proceedings Volume 11995, 119950M (2022) https://doi.org/10.1117/12.2610172

KEYWORDS: Antimony, Gallium, Heterojunctions, Indium arsenide, Indium gallium arsenide antimonide, Quantum dots, Gallium arsenide, Strain analysis, Solar cells, Optoelectronics

Read Abstract +

Proceedings Article | 1 August 2021 Poster + Presentation + Paper

Validation of the effects of growth parameter variations on the optical characteristics of InAs QD through Nextnano simulations

Suryansh Dongre, Debiprasad Panda, Debabrata Das, SanowarAlam Gazi, Ravindra Kumar, Mahitosh Biswas, Arjun Mandal, Subhananda Chakrabarti

Proceedings Volume 11802, 118020W (2021) https://doi.org/10.1117/12.2594397

KEYWORDS: Heterojunctions, Indium arsenide, Short wave infrared radiation, Gallium arsenide, Photodetectors, Luminescence, 3D modeling

Read Abstract +

Proceedings Article | 1 August 2021 Poster + Paper

Effect of variation in Sb composition in In0.18Ga0.82AsYSb1-Y capping layer on InAs Stranski-Krastanov (SK) QDs in strain coupled Stranski-Krastanov (SK) on submonolayer (SML) QDs heterostructures

Samishta Choudhary, Ravindra Kumar, Subhananda Chakrabarti

Proceedings Volume 11800, 1180019 (2021) https://doi.org/10.1117/12.2594788

KEYWORDS: Quantum dots, Indium arsenide, Semiconductors, Group III-V semiconductors, Gallium arsenide, Quantum wells

Read Abstract +

Proceedings Article | 18 April 2021 Presentation + Paper

Effect of GaAs1-xNx capping layer on the strain profile and emission PL wavelength of InAs quantum dot heterostructures using digital alloy approach

Ravindra Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 11771, 117710S (2021) https://doi.org/10.1117/12.2589218

Read Abstract +

Proceedings Article | 5 March 2021 Poster + Paper

Variation of In-concentration in barrier material of SK on SML quantum dot heterostructures and its impact on the strain and emission wavelength

Ravindra Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 11680, 116801K (2021) https://doi.org/10.1117/12.2578597

KEYWORDS: Heterojunctions, Indium arsenide, Telecommunications, Short wave infrared radiation, Quantum dots, Luminescence, Gallium arsenide

Read Abstract +

Proceedings Article | 21 August 2020 Poster + Paper

A comparative study of analog and digital alloy technique of InxGa1-xAs well material on InAs/InGaAs DWELL heterostructures

Ravindra Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 11465, 114651B (2020) https://doi.org/10.1117/12.2568836

KEYWORDS: Heterojunctions, Indium arsenide, Indium gallium arsenide, Indium, Quantum dots, Optoelectronics, Interfaces

Read Abstract +

Proceedings Article | 21 August 2020 Poster + Paper

Bilayer self-assembled InAs QD using digital alloy capping layer approach: experiment and theory

Ravindra Kumar, Jhuma Saha, Debiprasad Panda, Ravinder Kumar, Sanowar Alam Gazi, Raveesh Gourishetty, Subhananda Chakrabarti

Proceedings Volume 11465, 114651A (2020) https://doi.org/10.1117/12.2568820

KEYWORDS: Indium arsenide, Gallium arsenide, Interfaces, Quantum dots, Indium gallium arsenide, Heterojunctions, Luminescence

Read Abstract +

Proceedings Article | 1 April 2020 Presentation + Paper

Influence of InGaAs matrix thickness on the optical properties and strain distribution in self-assembled sub-monolayer InAs quantum dot heterostructures

Saranya Reddy Shriram, Ravindra Kumar, Sanowar Alam Gazi, Jhuma Saha, Debiprasad Panda, Arjun Mandal, Subhananda Chakrabarti

Proceedings Volume 11345, 113452W (2020) https://doi.org/10.1117/12.2555864

KEYWORDS: Indium gallium arsenide, Gallium arsenide, Indium arsenide, Heterojunctions, Quantum dots, Gallium, Optical properties, Indium, Arsenic, Interfaces

Read Abstract +

Proceedings Article | 1 April 2020 Presentation + Paper

Effect of varying facet angle on the strain and energy band profile of InAs QD heterostructures

Ravindra Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 11345, 113452Y (2020) https://doi.org/10.1117/12.2555912

KEYWORDS: Heterojunctions, Indium arsenide, Quantum dots, Interfaces, Luminescence, Gallium arsenide, Optoelectronics

Read Abstract +

Proceedings Article | 1 April 2020 Presentation + Paper

A comparative analysis of analog and digital alloy technique of InxGa1-xAs capping material on InAs quantum dot heterostructures

Ravindra Kumar, Jhuma Saha, Subhananda Chakrabarti

Proceedings Volume 11345, 113452Z (2020) https://doi.org/10.1117/12.2555916

KEYWORDS: Heterojunctions, Indium arsenide, Indium, Quantum dots, Crystals, Gallium arsenide, Indium gallium arsenide, Interfaces, Analytical research

Read Abstract +

Proceedings Article | 1 April 2020 Presentation + Paper

Study on optical properties and strain distribution of InAs/InGaAs sub-monolayer quantum dot heterostructure with multiple stacking layers

Saranya Reddy Shriram, Sanowar Alam Gazi, Ravindra Kumar, Jhuma Saha, Debiprasad Panda, Arjun Mandal, Subhananda Chakrabarti

Proceedings Volume 11345, 113452X (2020) https://doi.org/10.1117/12.2555871

KEYWORDS: Gallium arsenide, Heterojunctions, Quantum dots, Optical properties, Raman spectroscopy, Phonons, Indium arsenide, Luminescence, X-ray diffraction

Read Abstract +

Showing 5 of 19 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years