Microsphere whispering-gallery-mode laser using HgTe quantum dots

Shopova, Siyka I.; Farca, George; Rosenberger, A. T.; Wickramanayake, W. M. S.; Kotov, Nicholas A.

doi:10.1063/1.1841459

Cited by 95 publications

(61 citation statements)

References 23 publications

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“…In the IR range, Shopova et al [48] coated silica microspheres with HgTe nanoparticles using a polyelectrolyte/QD layer by layer (LbL) approach and Finlayson et al [49] attached PbSe QDs to photonic (micron size range) beads. Chunxia et al [50] deposited HgTe QDs on silicon-on-insulator photonic nanostructures and Luk et al [51] incorporated PbS QDs into a photonic crystal microcavity.…”

Section: Development and Considerations From Earlier Work On Hgte Qdsmentioning

confidence: 99%

Infrared Emitting HgTe Quantum Dots and Their Waveguide and Optoelectronic Devices

Kershaw

Rogach

2014

Zeitschrift Für Physikalische Chemie

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Abstract:The development of the research into the synthesis and optoelectronic applications of HgTe and related quantum dots (QDs) is reviewed, from the early days when it was felt that it might be a useful replacement for rare earths in telecom optical amplifiers, through to its more recent and broader appeal as an IR photodetector technology. Appropriately the early investigation of the material sprang from a contact with Prof. Horst Weller and his group at Hamburg University. Though the problem of Auger recombination meant that it was not so easy to make telecom amplifiers and lasers as many had hoped, it has proved to have an extraordinarily broad bandgap tuning range and just recently this has resulted in the demonstration of photodetectors in the mid-to long-IR region operating at up to 12 μm wavelength. This impressive flexibility has led to interest in HgTe QDs and optoelectronic devices based on them to be as strong as ever and growing as the prospects for commercialization improve with every narrowing in the gap between the performance of present day epitaxial devices and QD-based technology. In a further satisfying and well timed twist, Prof. Weller's 60 th year has seen preliminary reports of extended gain lifetime in 'doped' HgTe QDs which may yet lead to a completing of the circle with the distinct possibility of electrically driven telecom wavelength lasers and amplifiers in the coming years. This review follows the development of the several synthetic methods to grow colloidal HgTe QDs, and their deployment in optoelectronic devices to the present.

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Section: Development and Considerations From Earlier Work On Hgte Qdsmentioning

confidence: 99%

Infrared Emitting HgTe Quantum Dots and Their Waveguide and Optoelectronic Devices

Kershaw

Rogach

2014

Zeitschrift Für Physikalische Chemie

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“…Whispering gallery mode (WGM) resonators [2] , such as microspheres [3] , microtoroids [4] and microrings [5] have been the object of intensive research, both in their fundamental properties (such as quality factors, non-linear effects [6][7] and coupling to quantum systems [8] among many) and applications that include lasers [9][10] , chemical [11] and biological [12] sensing and photonic devices [13][14].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Optical Characterization of Silica Microspheres

Lv¹,

Liu²

2015

Proceedings of the 2015 International Conference on Education, Management, Information and Medicine

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“…In recent years, the design and synthesis of nanometer-scale particles have been the focus of intense fundamental and applied research, with special emphasis on their size-dependent properties [1][2][3][4][5][6]. Current research interests include the development of new, nanostructured materials (specifically, semiconductor nanocrystal-quantum-dot based) for a broad range of applications: optoelectronics, telecommunications, sensors, and artificial photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of CdS nanoparticles in mesoporous copolymer template

Monte¹,

Dantas²,

Morais³

et al. 2006

Braz. J. Phys.

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Micron-sized spheres of mesoporous styrene-divinylbenzene (Sty-DVB) copolymer were produced by suspension polymerisation in the presence of inert diluents. Using these mesoporous microspheres as a template, optically stable CdS nanoparticles have been synthesized. To characterize these CdS nanoparticles, Raman spectroscopy and micro-photoluminescence were used. We have observed enhanced emission and lasing action at certain wavelengths that correspond to the whispering gallery (WG) modes of the microspheres. High optical stability and low threshold value make this optical system promising in microlaser applications.

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Microsphere whispering-gallery-mode laser using HgTe quantum dots

Cited by 95 publications

References 23 publications

Infrared Emitting HgTe Quantum Dots and Their Waveguide and Optoelectronic Devices

Infrared Emitting HgTe Quantum Dots and Their Waveguide and Optoelectronic Devices

Fabrication and Optical Characterization of Silica Microspheres

Synthesis and characterisation of CdS nanoparticles in mesoporous copolymer template

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