Lasing from colloidal InP/ZnS quantum dots

Gao, Shuai; Zhang, Chunfeng; Liu, Yanjun; Su, Huaipeng; Wei, Lai; Huang, Tony Jun; Dellas, N. S.; Shang, Shuzhen; Mohney, Suzanne E.; Wang, Jingkang; Xu, Jian

doi:10.1364/oe.19.005528

Cited by 50 publications

(42 citation statements)

References 21 publications

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“…The structure was characterized by the VSL method and revealed narrow laser peaks (FWHM < 1 nm) when the pump fluency was higher than 5.5 mJ/cm 2 . A DFB structure was also chosen to demonstrate lasing with a close packed film of InP/ZnS QDs (emission at 600 nm) deposited on the grating [66]. The film presented lasing when it was optically pumped above 2 mJ/cm 2 under femtosecond excitation.…”

Section: Lasingmentioning

confidence: 99%

Active photonic devices based on colloidal semiconductor nanocrystals and organometallic halide perovskites

Suárez¹

2016

Eur. Phys. J. Appl. Phys.

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Abstract. Semiconductor nanocrystals have arisen as outstanding materials to develop a new generation of optoelectronic devices. Their fabrication under simple and low cost colloidal chemistry methods results in cheap nanostructures able to provide a wide range of optical functionalities. Their attractive optical properties include a high absorption cross section below the band gap, a high quantum yield emission at room temperature, or the capability of tuning the band-gap with the size or the base material. In addition, their solution process nature enables an easy integration on several substrates and photonic structures. As a consequence, these nanoparticles have been extensively proposed to develop several photonic applications, such as detection of light, optical gain, generation of light or sensing. This manuscript reviews the great effort undertaken by the scientific community to construct active photonic devices based on these nanoparticles. The conditions to demonstrate stimulated emission are carefully studied by comparing the dependence of the optical properties of the nanocrystals with their size, shape and composition. In addition, this paper describes the design of different photonic architectures (waveguides and cavities) to enhance the generation of photoluminescence, and hence to reduce the threshold of optical gain. Finally, semiconductor nanocrystals are compared to organometallic halide perovskites, as this novel material has emerged as an alternative to colloidal nanoparticles.

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Section: Lasingmentioning

confidence: 99%

Active photonic devices based on colloidal semiconductor nanocrystals and organometallic halide perovskites

Suárez¹

2016

Eur. Phys. J. Appl. Phys.

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“…Due to their outstanding properties, including resistance to photobleaching, high quantum yields, superior photostability, bioconjugation capabilities, QDs have been applied in many research fields [1][2][3][4][5]. In biomedical field, QDs have been used as fluorescent tags in biomarkers and fluorescent probes in biomolecule detections [6,7].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of QDs' fluorescence based on porous silicon Bragg mirror

Liu

Jia

et al. 2015

Physica B: Condensed Matter

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“…12 Therefore, the previous reported InP QDs always possessed broad size distribution and low emission efficiency, and the optical studies of InP QDs were mostly limited within the linear part. 9,13 Recently, by employing noncoordinating solvent and capping InP with ZnS shell of optimized thickness, high-quality InP/ZnS core-shell QDs were synthesized with a narrow size distribution and high emission quantum yield (QY) comparable to CdSe QDs. 14 In this letter, we present our investigation of the optical nonlinearity on these QDs, and it is shown that the colloidal InP/ZnS QDs exhibit strong SA in near resonant regime and significant TPA in nonresonant regime indicating they are of great interest as nonlinear optical materials.…”

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confidence: 99%

Near resonant and nonresonant third-order optical nonlinearities of colloidal InP/ZnS quantum dots

Wang

Yang

et al. 2013

Applied Physics Letters

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We have investigated the third-order optical nonlinearities of high-quality colloidal InP/ZnS core-shell quantum dots (QDs) using Z-scan technique with femtosecond pulses. The two-photon absorption cross-sections as high as 6.2 × 103 GM are observed at 800 nm (non-resonant regime) in InP/ZnS QDs with diameter of 2.8 nm, which is even larger than those of CdSe, CdS, and CdTe QDs at similar sizes. Furthermore, both of the 2.2 nm and 2.8 nm-sized InP/ZnS QDs exhibit strong saturable absorption in near resonant regime, which is attributed to large exciton Bohr radius in this material. These results strongly suggest the promising potential of InP/ZnS QDs for widespread applications, especially in two-photon excited bio-imaging and saturable absorbing. © 2013 American Institute of Physics

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Lasing from colloidal InP/ZnS quantum dots

Cited by 50 publications

References 21 publications

Active photonic devices based on colloidal semiconductor nanocrystals and organometallic halide perovskites

Active photonic devices based on colloidal semiconductor nanocrystals and organometallic halide perovskites

Enhancement of QDs' fluorescence based on porous silicon Bragg mirror

Near resonant and nonresonant third-order optical nonlinearities of colloidal InP/ZnS quantum dots

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