Highly polarized single mode nanobelt laser

Xu, Peipeng; Liu, S.; Tang, Mingwei; Xu, Xingqi; Lin, Xing; Zhuge, Minghua; Ren, Zhaohui; Wang, Z.; Liu, X.; Yang, Zongyin; Raghavan, Nagarajan; Yang, Qing

doi:10.1063/1.4984057

Cited by 10 publications

(6 citation statements)

References 24 publications

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“…Figure a shows the schematic of the NWRIM, in which a CdS NW serves as the local light source. [ 184–186 ] When the NW is pumped by a 405 nm continuous‐wave laser, the excited fluorescent light (center wavelength of ≈520 nm) could efficiently couple into the 200 nm thick TiO 2 film waveguide beneath the NW and illuminate the samples on the waveguide. Thus, scattered light can be collected by a far‐field objective, contributing subdiffraction‐limited spatial information to the final image.…”

Section: Superresolution Imaging Based On Sfs Methodsmentioning

confidence: 99%

Far‐Field Superresolution Imaging via Spatial Frequency Modulation

Tang

Liu

Zhong

et al. 2020

Laser & Photonics Reviews

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The diffraction limit substantially impedes the resolution of the conventional optical microscope. Under traditional illumination, the high-spatial-frequency light corresponding to the subwavelength information of objects is located in the near-field in the form of evanescent waves, and thus not detectable by conventional far-field objectives. Recent advances in nanomaterials and metamaterials provide new approaches to break this limitation by utilizing large-wavevector evanescent waves. Here, a comprehensive review of this emerging and fast-growing field is presented. The current superresolution imaging techniques based on evanescent-wave-assisted spatial frequency modulation, including hyperlens, microsphere lens, and evanescent field-illuminated spatial frequency shift microscopy, are illustrated. They are promising in investigating unobserved details and processes in fields such as medicine, biology, and material research. Some current challenges and future possibilities of these superresolution methods are also discussed.

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Section: Superresolution Imaging Based On Sfs Methodsmentioning

confidence: 99%

Far‐Field Superresolution Imaging via Spatial Frequency Modulation

Tang

Liu

Zhong

et al. 2020

Laser & Photonics Reviews

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“…In 2007 and 2010, Wang et al proposed the two methods utilizing piezotronics and piezophototronics with the coupling of electric, optical, and stress fields based on wurtzite‐structural semiconductors by applying a strain . Very recently, the ability to modulate the optical bandgap of wurtzite‐structural ZnO via external mechanical pressure and tensile strain has drawn significant attention . However, the redshift of PL spectrum induced by tensile strain is too small to modulate the lasing competition.…”

Section: Operating Environmental Condition Induced Lasing Wavelength mentioning

confidence: 99%

“…Cavity design is another effective strategy for achieving tunable lasing wavelengths ( Table 1 ). In this approach, changing the geometry of the cavity structure or the refractive index of the cavity results in changes in the resonance modes and free spectral range, which can be utilized to select specific lasing wavelengths. The importance of cavity design lies in two factors: (1) A MNL with a particular structure can be made tunable by changing the resonators; (2) The variable wavelength only lases when the newly designed cavity satisfies the threshold condition …”

Section: Introductionmentioning

confidence: 99%

Wavelength‐Tunable Micro/Nanolasers

Zhuge

Pan

Zheng

et al. 2019

Advanced Optical Materials

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Micro/nanolasers (MNLs) emit coherent light on the micro/nanoscale. Research on the application of MNLs has progressed rapidly in the past two decades because of their great potential for optoelectronics with compact sizes, low cost, and low energy consumption. Wavelength‐tunable MNLs are essential for a variety of fields including optical communications, solid‐state lighting, and on‐chip wavelength‐division multiplexing. Thus far, tremendous progress is achieved toward the development of wavelength‐tunable MNLs based on bandgap tuning and cavity design. Lasing wavelength is substantially defined by material bandgap, tuned by changing the geometry of the cavity structures, and can also, to some extent, be influenced by operational environment. This review is focused on the intrinsic merits of wavelength‐tunable MNLs, and the recent progress is examined. Bandgap engineering, materials synthesis, cavity structure design, wavelength‐tuning principles, and lasing performance are explored and systematically discussed. Finally, the current research status and perspectives on possible future applications are summarized.

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“…Changing the geometry of the cavity structure results in changes in the resonant modes, which can be utilized to select specific lasing wavelengths. [33][34][35][36] Unlike energy band modulation, the modulation of the cavity structure is easy for pattern integration and relatively stable. Recently, nanolaser arrays are realized based on individual waved CdS nanoribbons (NRs) with modulating thickness along the length direction.…”

Section: Introductionmentioning

confidence: 99%

On‐Chip Multiwavelength Single‐Mode Lasers with CdSe Nanoribbons‐Embedded Microcavities

Cui

Zhao

et al. 2022

Physica Rapid Research Ltrs

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Integrated multiwavelength nanolasers are important in the practical development of optical circuitry for optical information processing and optical data storage. Herein, a new method for on‐chip integrated lasers is proposed, which can integrate single‐mode lasers with multiple wavelengths at room temperature. A four‐wavelength single‐mode nanoribbon laser chip is fabricated for demonstration. The mode of different laser units is controlled by the thickness of dielectric microcavity layers to select the resonant modes of excitation. Therefore, multiwavelength lasing can be coupled out based on the integrated cavity which is realized using combinatorial etching technique and can integrate tens of different‐wavelength lasers on a chip. The lasing modes of this device are all single‐mode lasing because of the short cavity length. Its lowest lasing threshold is only 5.4 kW cm−2. The gain material and the dielectric microcavity can be controlled and fabricated separately, which have strong controllability and flexibility. This new laser chip paves the way for a new class of hybrid nanolasers for chip‐integrated applications.

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Highly polarized single mode nanobelt laser

Cited by 10 publications

References 24 publications

Far‐Field Superresolution Imaging via Spatial Frequency Modulation

Far‐Field Superresolution Imaging via Spatial Frequency Modulation

Wavelength‐Tunable Micro/Nanolasers

On‐Chip Multiwavelength Single‐Mode Lasers with CdSe Nanoribbons‐Embedded Microcavities

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