Abstract
Single band-edge states can trap light and function as high-quality optical feedback for microscale lasers and nanolasers. However, access to more than a single band-edge mode for nanolasing has not been possible because of limited cavity designs. Here, we describe how plasmonic superlattices - finite-arrays of nanoparticles (patches) grouped into microscale arrays - can support multiple band-edge modes capable of multi-modal nanolasing at programmed emission wavelengths and with large mode spacings. Different lasing modes show distinct input-output light behaviour and decay dynamics that can be tailored by nanoparticle size. By modelling the superlattice nanolasers with a four-level gain system and a time-domain approach, we reveal that the accumulation of population inversion at plasmonic hot spots can be spatially modulated by the diffractive coupling order of the patches. Moreover, we show that symmetry-broken superlattices can sustain switchable nanolasing between a single mode and multiple modes.
| Original language | English |
|---|---|
| Pages (from-to) | 889-894 |
| Number of pages | 6 |
| Journal | Nature Nanotechnology |
| Volume | 12 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1 2017 |
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ASJC Scopus subject areas
- Bioengineering
- Atomic and Molecular Physics, and Optics
- Biomedical Engineering
- Materials Science(all)
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
Band-edge engineering for controlled multi-modal nanolasing in plasmonic superlattices. / Wang, Danqing; Yang, Ankun; Wang, Weijia; Hua, Yi; Schaller, Richard D; Schatz, George C; Odom, Teri W.
In: Nature Nanotechnology, Vol. 12, No. 9, 01.09.2017, p. 889-894.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Band-edge engineering for controlled multi-modal nanolasing in plasmonic superlattices
AU - Wang, Danqing
AU - Yang, Ankun
AU - Wang, Weijia
AU - Hua, Yi
AU - Schaller, Richard D
AU - Schatz, George C
AU - Odom, Teri W
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Single band-edge states can trap light and function as high-quality optical feedback for microscale lasers and nanolasers. However, access to more than a single band-edge mode for nanolasing has not been possible because of limited cavity designs. Here, we describe how plasmonic superlattices - finite-arrays of nanoparticles (patches) grouped into microscale arrays - can support multiple band-edge modes capable of multi-modal nanolasing at programmed emission wavelengths and with large mode spacings. Different lasing modes show distinct input-output light behaviour and decay dynamics that can be tailored by nanoparticle size. By modelling the superlattice nanolasers with a four-level gain system and a time-domain approach, we reveal that the accumulation of population inversion at plasmonic hot spots can be spatially modulated by the diffractive coupling order of the patches. Moreover, we show that symmetry-broken superlattices can sustain switchable nanolasing between a single mode and multiple modes.
AB - Single band-edge states can trap light and function as high-quality optical feedback for microscale lasers and nanolasers. However, access to more than a single band-edge mode for nanolasing has not been possible because of limited cavity designs. Here, we describe how plasmonic superlattices - finite-arrays of nanoparticles (patches) grouped into microscale arrays - can support multiple band-edge modes capable of multi-modal nanolasing at programmed emission wavelengths and with large mode spacings. Different lasing modes show distinct input-output light behaviour and decay dynamics that can be tailored by nanoparticle size. By modelling the superlattice nanolasers with a four-level gain system and a time-domain approach, we reveal that the accumulation of population inversion at plasmonic hot spots can be spatially modulated by the diffractive coupling order of the patches. Moreover, we show that symmetry-broken superlattices can sustain switchable nanolasing between a single mode and multiple modes.
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U2 - 10.1038/nnano.2017.126
DO - 10.1038/nnano.2017.126
M3 - Article
VL - 12
SP - 889
EP - 894
JO - Nature Nanotechnology
JF - Nature Nanotechnology
SN - 1748-3387
IS - 9
ER -