Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity

Luk, Ting S.; Xiong, Shenglin; Chow, Weng W.; Miao, Xiaoyu; Subramania, Ganapathi Subramanian; Resnick, Paul; Fischer, Arthur J.; Brinker, Jeffrey

doi:10.1364/josab.28.001365

Cited by 9 publications

(8 citation statements)

References 66 publications

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“…The LID has been observed in many dielectric materials at high light field [21][22][23][24][25][26][27]. If the inference that NLS is accompanied with an LID sample in these solvents is true, we could understand why the OA Z-scan trace feature is different for the three solvents.…”

Section: B Nlsmentioning

confidence: 95%

“…From the figure, we find that the maximum light intensity at the exit face increases with sample length L and decreases with ellipticity e although the input energy is the same. However, the occurrence of NLS and LID is greatly related to intensity [21][22][23][24][25][26][27]. The dependence of NLS on the polarization state and sample length could be further interpreted as follows.…”

Section: B Nlsmentioning

confidence: 99%

“…Because of self-focusing effect, both the intensity distribution and the maximum intensity are functions of the polarization state during the light propagating in isotropic media. However, the nonlinear scattering (NLS) and laserinduced damage (LID) greatly relate to the light intensity as reported in [15,[19][20][21][22][23][24][25][26][27]. So the NLS in isotropic media should be a function of polarization state too.…”

Section: Introductionmentioning

confidence: 99%

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Polarization characteristics of nonlinear refraction and nonlinear scattering in several solvents

et al. 2012

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The polarization characteristics of nonlinear refraction and nonlinear scattering in several solvents (toluene, o-dichlorobenzene, N, N-dimethylformamide) are studied using the polarized light Z-scan technique with femtosecond laser pulses. For nonlinear refraction, the physical mechanism of the polarization characteristics is that the nonlinear polarization component related to Reχ 3 xyyx could be adjusted by polarization state of incident light in isotropic media. For nonlinear scattering, the polarization characteristic is related to the self-focusing effect, which depends on the nonlinear refractive index and polarization state of incident light. In addition, the values of nonlinear refractive indices and third-order nonlinear susceptibility components are determined for these solvents at the femtosecond time scale. Both nonresonant electronic nonlinearity and fast noninstantaneous nuclear nonlinearity contribute to these values at the pulse width used in the measurements. Also, these nonlinear refractive indices and third-order nonlinear susceptibility components could be used in calculating nonlinear optical parameters of those novel materials that need to be dissolved in these solvents in nonlinear optical measurements.

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Section: B Nlsmentioning

confidence: 95%

Section: B Nlsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polarization characteristics of nonlinear refraction and nonlinear scattering in several solvents

et al. 2012

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“…The systems shown in Fig. 1 for studying geometric effects in quantum thermal transport may be realizable in quantum dots [56], optomechanical systems [57,58], and atomic or molecular systems [59][60][61] with suitable arrangements in a multi-path geometry and proper thermal reservoirs. In accordance with the theoretical parameters, the geometry-based circulations may survive in experiments performed at liquid helium temperature with the frequencies of the system of interest in the terahertz range.…”

Section: Experimental Implications and Possible Applicationsmentioning

confidence: 99%

Geometry-based circulation of local thermal current in quantum harmonic and Bose Hubbard systems

Dugar,

Chien

2021

Preprint

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A geometry-based mechanism for generating steady-state internal circulation of local thermal currents is demonstrated by harmonically coupled quantum oscillators formulated by the Redfield quantum master equation (RQME) and the Bose Hubbard model (BHM) of phonons formulated by the Lindblad quantum master equation (LQME) using the simple multi-path geometry of a triangle. Driven by two reservoirs at different temperatures, both systems can exhibit an atypical local thermal current flowing against the total current. However, the total thermal current behaves normally. While the RQME of harmonically coupled quantum oscillators allows an analytical solution, the LQME of the interacting BHM can be solved numerically. The emergence of the geometry-based circulation in both systems demonstrates the ubiquity and robustness of the mechanism. In the high-temperature limit, the results agree with the classical results, confirming the generality of the geometric-based circulation across the quantum and classical boundary. Possible experimental implications and applications are briefly discussed.

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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. Cylindrical microcavities coated with CdSe/ZnS core shells, and CdSe nanorods were used by Kazes et al [52] whilst Min et al [53] coated lithographically patterned torroidal (micro-ring) silica resonators with CdSe/ZnS QDs.…”

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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Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity

Cited by 9 publications

References 66 publications

Polarization characteristics of nonlinear refraction and nonlinear scattering in several solvents

Polarization characteristics of nonlinear refraction and nonlinear scattering in several solvents

Geometry-based circulation of local thermal current in quantum harmonic and Bose Hubbard systems

Infrared Emitting HgTe Quantum Dots and Their Waveguide and Optoelectronic Devices

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