Recent Progress in Nanolaser Technology

Jeong, Kwang Yong; Hwang, Miriam; Kim, Jungkil; Park, Jin-Sung; Lee, Jung Min; Park, Hong Gyu

doi:10.1002/adma.202001996

Cited by 62 publications

(51 citation statements)

References 137 publications

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“…U ltra-compact lasers operating in the single-mode regime have been a long-standing goal for nanophotonics. Various mechanisms for strong light confinement were proposed and demonstrated in subwavelength and wavelength-scale optical cavities used to decrease their lasing threshold [1][2][3][4] . However, nanolasers such as defect-type photonic crystal lasers and plasmonic lasers possess limited output power and exhibit instability to the structural disorder 5,6 .…”

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confidence: 99%

Ultralow-threshold laser using super-bound states in the continuum

et al. 2021

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Wavelength-scale lasers provide promising applications through low power consumption requiring for optical cavities with increased quality factors. Cavity radiative losses can be suppressed strongly in the regime of optical bound states in the continuum; however, a finite size of the resonator limits the performance of bound states in the continuum as cavity modes for active nanophotonic devices. Here, we employ the concept of a supercavity mode created by merging symmetry-protected and accidental bound states in the continuum in the momentum space, and realize an efficient laser based on a finite-size cavity with a small footprint. We trace the evolution of lasing properties before and after the merging point by varying the lattice spacing, and we reveal this laser demonstrates the significantly reduced threshold, substantially increased quality factor, and shrunken far-field images. Our results provide a route for nanolasers with reduced out-of-plane losses in finite-size active nanodevices and improved lasing characteristics.

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Ultralow-threshold laser using super-bound states in the continuum

et al. 2021

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“…In addition to the threshold value and working temperature, the characteristic of a plasmonic nanolaser also includes laser polarization, mode, wavelength, etc. [18,205,206,214] These parameters can be flexibly tuned through elaborate engineering of the plasmonic arrays. As shown in Figure 7e, when pump lasers with different polarizations were used, the rhombohedral Al nanoparticle array shows totally different responses.…”

Section: Nanolasermentioning

confidence: 99%

Metallic Plasmonic Array Structures: Principles, Fabrications, Properties, and Applications

et al. 2021

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can efficiently couple light into nanostructures and confine light below diffraction limit. [8,9] With these properties, plasmonics have found important applications in various fields such as plasmonic sensing, [10][11][12][13] plasmon-enhanced spectroscopies, [14][15][16] plasmonic nanolasing, [17][18][19] and perfect light absorption. [20,21] The optical performances of plasmonic nanostructures are highly dependent on the resonance modes that they support. Generally, there are two fundamental surface plasmonic modes: localized surface plasmon resonance (LSPR) and propagating surface plasmon polaritons (SPP). [22,23] LSPR can be observed on metal nanoparticles. [22,24,25] However, the strong radiative damping of metal nanoparticles results in broad resonant spectra, severely limiting the applications of metal nanoparticles in fields such as plasmonic sensing and nanolasing. [26,27] SPP is usually generated at the interface between metal and dielectric with the assistance of a high refractive index prism or by constructing a grating structure. [23,28,29] The near-field decay length of SPP mode is 40-50 times larger than that of LSPR mode. [23] Therefore, SPP structures usually provide higher bulk sensitivity when used for plasmonic sensing. [23] However, it is difficult to achieve a flexible tuning of SPP mode only by above configurations. In addition, single resonance mode also greatly limits the applications of the devices.According to the plasmon hybridization theory, coupling of different resonance modes can endow plasmonic nanostructures with richer optical properties and thereby improve their performance and broaden their application fields. [30][31][32] Metallic plasmonic arrays have been demonstrated to be a powerful platform for the simultaneous excitation of the above two basic types of plasmonic modes. [33,34] In addition, they can also support many other types of resonance modes such as Fabry-Pérot (F-P) cavity mode, surface lattice resonance (SLR), and plasmonic Fano resonance due to the flexibility in structure design. [32,[35][36][37][38] These modes together give the nanostructured plasmonic arrays with attractive performance unattainable by using individual LSPR or SPP mode. Benefited from the abundant optical properties, nanostructured metallic plasmonic arrays can be utilized in a fashion of "device-by-design." For example, for plasmonic sensing, a plasmonic array with a narrow spectrum can be fabricated for an excellent sensing performance; [23,26] while for surface-enhanced Raman spectroscopy (SERS) detection, a plasmonic array with a relatively broad spectrum is needed to achieve local field enhancement and radiative enhancement simultaneously. [39,40] Therefore, the investigation The vast development of nanofabrication has spurred recent progress for the manipulation of light down to a region much smaller than the wavelength. Metallic plasmonic array structures are demonstrated to be the most powerful platform to realize controllable light-matter interactions and have found wide application...

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“…To date, various alternative technologies have been reported, which could be roughly divided into two types, top‐down and bottom‐up methods. [ 17 ] The top‐down approach often involve the direct patterning processes such as laser‐induced growth, [ 18 ] focused ion beam etching, [ 19 ] inkjet printing, [ 20 ] and so on. These technologies could achieve effective control over the dimension, resolution, and alignment of the perovskite arrays.…”

Section: Introductionmentioning

confidence: 99%

Sensitive Photodetector Arrays Based on Patterned CH₃NH₃PbBr₃ Single Crystal Microplate for Image Sensing Application

et al. 2021

Advanced Optical Materials

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Hybrid perovskite has attracted intensive attention for its diverse optoelectronic applications, and integrated perovskite devices are broadly required in various functional optoelectronics. In this study, an integrated photodetector (PD) array is developed based on perovskite microplate arrays for trajectory track and image sensing application. The perovskite microplate array is fabricated by a modified photolithography method, which can confine the growth of perovskite single‐crystal microplate arrays with controlled dimension. Optoelectronic measurement of the microplate array device reveals that the as‐fabricated PD devices exhibit not only obvious photoresponse characteristics at zero bias, with a high on–off ratio of up to 1.5 × 104, a responsivity of 0.38 AW−1, and specific detectivity of 1.7 × 1012 Jones, respectively, but also relatively good uniformity, with neglectable pixel‐to‐pixel variation. In addition, the as‐integrated PD arrays can capture real‐time light traces and record simple character with satisfactory resolution, which indicates that the current integrated perovskite device has potential application in light trajectory tracking and image sensing.

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Recent Progress in Nanolaser Technology

Cited by 62 publications

References 137 publications

Ultralow-threshold laser using super-bound states in the continuum

Ultralow-threshold laser using super-bound states in the continuum

Metallic Plasmonic Array Structures: Principles, Fabrications, Properties, and Applications

Sensitive Photodetector Arrays Based on Patterned CH₃NH₃PbBr₃ Single Crystal Microplate for Image Sensing Application

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Recent Progress in Nanolaser Technology

Cited by 62 publications

References 137 publications

Ultralow-threshold laser using super-bound states in the continuum

Ultralow-threshold laser using super-bound states in the continuum

Metallic Plasmonic Array Structures: Principles, Fabrications, Properties, and Applications

Sensitive Photodetector Arrays Based on Patterned CH3NH3PbBr3 Single Crystal Microplate for Image Sensing Application

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Sensitive Photodetector Arrays Based on Patterned CH₃NH₃PbBr₃ Single Crystal Microplate for Image Sensing Application