Dynamical Color-Controllable Lasing with Extremely Wide Tuning Range from Red to Green in a Single Alloy Nanowire Using Nanoscale Manipulation

Liu, Zhicheng; Yin, Leijun; Ning, Hao; Yang, Zongyin; Tong, Limin; Ning, Cun‐Zheng

doi:10.1021/nl4029686

Cited by 104 publications

(102 citation statements)

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“…Through a detailed characterization and understanding of this growth mechanism, we have designed an optimized growth sequence for each segment, allowing for the growth of nanosheets composed of several parallel segments with the desired alloy compositions, geometry and crystal quality. The parallel cavity arrangement significantly reduces the absorption of shorter-wavelength photons by the narrower-bandgap material when compared with composition-graded one-dimensional nanostructures 25 . As a result, lasing over a wavelength range of 191 nm in a single monolithic structure, the largest ever reported, has been observed.…”

Section: Discussionmentioning

confidence: 99%

“…In our efforts to achieve such an ultimate goal, we have already demonstrated two-colour lasing 24,25 from a single two-segment CdSSe nanosheet 24,26 and from a nanowire with a looped end 25 . We determined that two-colour lasing from a monolithic structure could best be achieved using a side-by-side cavity geometry (Supplementary Sections 1-4) rather than a longitudinal heterostructure, due to the absorption of short-wavelength emission by narrow-gap material.…”

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confidence: 99%

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A monolithic white laser

et al. 2015

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Monolithic semiconductor lasers capable of emitting over the full visible-colour spectrum have a wide range of important applications, such as solid-state lighting, full-colour displays, visible colour communications and multi-colour fluorescence sensing. The ultimate form of such a light source would be a monolithic white laser. However, realizing such a device has been challenging because of intrinsic difficulties in achieving epitaxial growth of the mismatched materials required for different colour emission. Here, we demonstrate a monolithic multi-segment semiconductor nanosheet based on a quaternary alloy of ZnCdSSe that simultaneously lases in the red, green and blue. This is made possible by a novel nanomaterial growth strategy that enables separate control of the composition, morphology and therefore bandgaps of the segments. Our nanolaser can be dynamically tuned to emit over the full visible-colour range, covering 70% more perceptible colours than the most commonly used illuminants.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

A monolithic white laser

et al. 2015

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“…The first is based on spatially graded alloy composition achieved during nanowire growth. This was demonstrated on a single chip (1.2 cm long) using the ternary alloy CdSSe, with emission wavelengths ranging from 500 to 700 nm [77,117] [58]. The second tunability method is based on the self-absorption/reabsorption mechanism (see Section 3-b).…”

Section: (B) Tunabilitymentioning

confidence: 99%

Nanowire Lasers

et al. 2015

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Abstract:We review principles and trends in the use of semiconductor nanowires as gain media for stimulated emission and lasing. Semiconductor nanowires have recently been widely studied for use in integrated optoelectronic devices, such as light-emitting diodes (LEDs), solar cells, and transistors. Intensive research has also been conducted in the use of nanowires for subwavelength laser systems that take advantage of their quasione-dimensional (1D) nature, flexibility in material choice and combination, and intrinsic optoelectronic properties. First, we provide an overview on using quasi-1D nanowire systems to realize subwavelength lasers with efficient, directional, and low-threshold emission. We then describe the state of the art for nanowire lasers in terms of materials, geometry, and wavelength tunability. Next, we present the basics of lasing in semiconductor nanowires, define the key parameters for stimulated emission, and introduce the properties of nanowires. We then review advanced nanowire laser designs from the literature. Finally, we present interesting perspectives for low-threshold nanoscale light sources and optical interconnects. We intend to illustrate the potential of nanolasers in many applications, such as nanophotonic devices that integrate electronics and photonics for next-generation optoelectronic devices. For instance, these building blocks for nanoscale photonics can be used for data storage and biomedical applications when coupled to on-chip characterization tools. These nanoscale monochromatic laser light sources promise breakthroughs in nanophotonics, as they can operate at room temperature, can potentially be electrically driven, and can yield a better understanding of intrinsic nanomaterial properties and surface-state effects in lowdimensional semiconductor systems.

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“…For over a decade, signifi cant attention has been dedicated to producing various nanoscale photonic elements, [1][2][3][4][5][6][7][8][9] sharing the logic of miniaturization in modern electronics. For over a decade, signifi cant attention has been dedicated to producing various nanoscale photonic elements, [1][2][3][4][5][6][7][8][9] sharing the logic of miniaturization in modern electronics.…”

Section: Communicationmentioning

confidence: 99%