Tuneable superradiant thermal emitter assembly

Sudaraka Mallawaarachchi, Malin Premaratne, Sarath D Gunapala, Philip K Maini

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

Superradiance is a signature effect in quantum photonics that explains the collective enhancement of emission power by a factor of N2 when N emitters are placed in subwavelength proximity. Although the effect is inherently transient, successful attempts have been made to sustain it in the steady-state regime. Until recently, the effects of superradiance were not considered to be applicable to thermal emitters due to their intrinsic incoherent nature. Novel nanophotonic thermal emitters display favorable coherent characteristics that enable them to obey principles of superradiance. However, published analytical work on conventional superradiant thermal emitter assemblies shows an anomalous power scaling of 1/N, and therefore increasing the number of thermal emitters leads to a degeneration of power at resonance. This phenomenon immediately renders the effect of thermal superradiance futile since it cannot outperform noncoupled emitters in the steady-state regime. We propose an alternative assembly of thermal emitters with specific features that improves the power scaling while maintaining the effects of superradiance. In essence, we show that our emitter assembly achieves superior power delivery over conventional noncoupled emitter systems at resonance. Additionally, this assembly has the ability to be tuned to operate at specific resonant frequencies, which is a vital requirement for applications such as photothermal cancer therapy.

Original languageEnglish
Article number155443
Number of pages10
JournalPhysical Review B
Volume95
Issue number15
DOIs
Publication statusPublished - 25 Apr 2017

Cite this

Mallawaarachchi, S., Premaratne, M., Gunapala, S. D., & Maini, P. K. (2017). Tuneable superradiant thermal emitter assembly. Physical Review B, 95(15), [155443]. https://doi.org/10.1103/PhysRevB.95.155443
Mallawaarachchi, Sudaraka ; Premaratne, Malin ; Gunapala, Sarath D ; Maini, Philip K. / Tuneable superradiant thermal emitter assembly. In: Physical Review B. 2017 ; Vol. 95, No. 15.
@article{01c8165e4b5542bbaf7c14b9900255c1,
title = "Tuneable superradiant thermal emitter assembly",
abstract = "Superradiance is a signature effect in quantum photonics that explains the collective enhancement of emission power by a factor of N2 when N emitters are placed in subwavelength proximity. Although the effect is inherently transient, successful attempts have been made to sustain it in the steady-state regime. Until recently, the effects of superradiance were not considered to be applicable to thermal emitters due to their intrinsic incoherent nature. Novel nanophotonic thermal emitters display favorable coherent characteristics that enable them to obey principles of superradiance. However, published analytical work on conventional superradiant thermal emitter assemblies shows an anomalous power scaling of 1/N, and therefore increasing the number of thermal emitters leads to a degeneration of power at resonance. This phenomenon immediately renders the effect of thermal superradiance futile since it cannot outperform noncoupled emitters in the steady-state regime. We propose an alternative assembly of thermal emitters with specific features that improves the power scaling while maintaining the effects of superradiance. In essence, we show that our emitter assembly achieves superior power delivery over conventional noncoupled emitter systems at resonance. Additionally, this assembly has the ability to be tuned to operate at specific resonant frequencies, which is a vital requirement for applications such as photothermal cancer therapy.",
author = "Sudaraka Mallawaarachchi and Malin Premaratne and Gunapala, {Sarath D} and Maini, {Philip K}",
year = "2017",
month = "4",
day = "25",
doi = "10.1103/PhysRevB.95.155443",
language = "English",
volume = "95",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "15",

}

Mallawaarachchi, S, Premaratne, M, Gunapala, SD & Maini, PK 2017, 'Tuneable superradiant thermal emitter assembly', Physical Review B, vol. 95, no. 15, 155443. https://doi.org/10.1103/PhysRevB.95.155443

Tuneable superradiant thermal emitter assembly. / Mallawaarachchi, Sudaraka; Premaratne, Malin; Gunapala, Sarath D; Maini, Philip K.

In: Physical Review B, Vol. 95, No. 15, 155443, 25.04.2017.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Tuneable superradiant thermal emitter assembly

AU - Mallawaarachchi, Sudaraka

AU - Premaratne, Malin

AU - Gunapala, Sarath D

AU - Maini, Philip K

PY - 2017/4/25

Y1 - 2017/4/25

N2 - Superradiance is a signature effect in quantum photonics that explains the collective enhancement of emission power by a factor of N2 when N emitters are placed in subwavelength proximity. Although the effect is inherently transient, successful attempts have been made to sustain it in the steady-state regime. Until recently, the effects of superradiance were not considered to be applicable to thermal emitters due to their intrinsic incoherent nature. Novel nanophotonic thermal emitters display favorable coherent characteristics that enable them to obey principles of superradiance. However, published analytical work on conventional superradiant thermal emitter assemblies shows an anomalous power scaling of 1/N, and therefore increasing the number of thermal emitters leads to a degeneration of power at resonance. This phenomenon immediately renders the effect of thermal superradiance futile since it cannot outperform noncoupled emitters in the steady-state regime. We propose an alternative assembly of thermal emitters with specific features that improves the power scaling while maintaining the effects of superradiance. In essence, we show that our emitter assembly achieves superior power delivery over conventional noncoupled emitter systems at resonance. Additionally, this assembly has the ability to be tuned to operate at specific resonant frequencies, which is a vital requirement for applications such as photothermal cancer therapy.

AB - Superradiance is a signature effect in quantum photonics that explains the collective enhancement of emission power by a factor of N2 when N emitters are placed in subwavelength proximity. Although the effect is inherently transient, successful attempts have been made to sustain it in the steady-state regime. Until recently, the effects of superradiance were not considered to be applicable to thermal emitters due to their intrinsic incoherent nature. Novel nanophotonic thermal emitters display favorable coherent characteristics that enable them to obey principles of superradiance. However, published analytical work on conventional superradiant thermal emitter assemblies shows an anomalous power scaling of 1/N, and therefore increasing the number of thermal emitters leads to a degeneration of power at resonance. This phenomenon immediately renders the effect of thermal superradiance futile since it cannot outperform noncoupled emitters in the steady-state regime. We propose an alternative assembly of thermal emitters with specific features that improves the power scaling while maintaining the effects of superradiance. In essence, we show that our emitter assembly achieves superior power delivery over conventional noncoupled emitter systems at resonance. Additionally, this assembly has the ability to be tuned to operate at specific resonant frequencies, which is a vital requirement for applications such as photothermal cancer therapy.

UR - http://www.scopus.com/inward/record.url?scp=85018326694&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.95.155443

DO - 10.1103/PhysRevB.95.155443

M3 - Article

VL - 95

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 15

M1 - 155443

ER -