Hybrid Silicon Microlasers with Gain Patches of Unlimited Designs

Kim, Yushin; Park, Byoung Jun; Kim, Moohyuk; Song, Da; Lee, Jungmin; Yu, Aran; Kim, Myung‐Ki

doi:10.1021/acsphotonics.1c01053

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…Although this process worked well with the most wire-typed nanostructures, it was sometimes limited to picking up the structures that were shorter than ∼7 μm and/or wider than ∼500 nm. For those structures, we have developed a unique two-step pick-up and transfer process (Figure S2) that takes full advantage of the optical and mechanical properties of PDMS microtips, for example, high optical transparency in the visible wavelengths, good mechanical flexibility, and controllable adhesive force. − We believe that the above-described two-step transfer technique is simple and readily applicable to a variety of micro/nanostructures and thus useful for many applications that require highly accurate hybrid and/or heterogeneous on-chip integration.…”

Section: Resultsmentioning

confidence: 99%

“…Specifically, we fabricated an all-graphene-contact device by introducing mechanically flexible and optically transparent graphene contacts at the top and bottom surfaces of a semiconductor NW. The vertically p–i–n-doped top-down-fabricated NWs are precisely align-transferred on a target site in a chip by using a microstructured polymer-assisted transfer-printing technique. − Electroluminescence (EL) spectroscopy was carried out to demonstrate the successful operation of the device and characterize its optical properties. We also coupled an electrically pumped NW source to a strip-type photonic waveguide (SPWG) to demonstrate the on-demand integration and successfully showed light coupling and waveguiding.…”

Section: Introductionmentioning

confidence: 99%

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All-Graphene-Contact Electrically Pumped On-Demand Transferrable Nanowire Source

Kim

Park

et al. 2022

Nano Lett.

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On-demand NW light sources in a photonic integrated circuit (PIC) have faced several practical challenges. Here, we report on an all-graphene-contact, electrically pumped, on-demand transferrable NW source that is fabricated by implementing an all-graphene-contact approach in combination with a highly accurate microtransfer printing technique. A vertically p−i−n-doped top-down-fabricated semiconductor NW with optical gain structures is electrically pumped through the patterned multilayered graphene contacts. Electroluminescence (EL) spectroscopy results reveal that the electrically driven NW device exhibits strong EL emission between the contacts and displays waveguiding properties. Further, a single NW device is precisely integrated into an existing photonic waveguide to perform light coupling and waveguiding experiments. Three-dimensional numerical simulation results show a good agreement with experimental observations. We believe that our all-graphene-contact approach is readily applicable to various micro/nanostructures and devices, which facilitates stable electrical operation and thus extends their practical applicability in compact integrated circuits.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

All-Graphene-Contact Electrically Pumped On-Demand Transferrable Nanowire Source

Kim

Park

et al. 2022

Nano Lett.

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“…Thus, to use these approaches, one should initially bond a large volume of III-V dies in an extended area of the coupling region, which inevitably sacrifices the massive III-V materials, high integration density, and compactness [7,10,12]. In this regard, a recently emerging integration technique of micro transfer printing using a microstructured adhesive polymer stamp has drawn considerable attention, demonstrating its ability to mechanically manipulate micro-and nano-scale materials and structures in a highly precise and accurate manner [18][19][20][21][30][31][32][33]. For example, an edge-emitting III-V gain media was transfer-printed using a polymer microtip [17,18].…”

Section: Introductionmentioning

confidence: 99%

On-Demand Waveguide-Integrated Microlaser-on-Silicon

Min,

Kim,

2023

Applied Sciences

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The integration of high-quality III–V light sources on the Si platform has encountered a challenge that demands a highly precise on-demand addressability of single devices in a significantly reduced integration area. However, simple schemes to address the issue without causing major optical losses remain elusive. Here, we propose a waveguide-integrated microlaser-on-silicon in which the III–V/Si integration requires only a small micron-sized post structure with a diameter of <2 µm and enables efficient light coupling with an estimated coupling efficiency of 44.52%. Top-down fabricated high-quality microdisk cavities with an active gain medium were precisely micro-transferred on a small Si-post structure that was rationally designed in the vicinity of a strip-type Si waveguide (WG). Spectroscopic measurements exhibit successful lasing emission with a threshold of 378.0 µW, bi-directional light coupling, and a propagation of >50 µm through the photonic Si WG. Numerical study provides an in-depth understanding of light coupling and verifies the observations in the experiment. We believe that the proposed microlaser-on-Si is a simple and efficient scheme requiring a minimum integration volume smaller than the size of the light source, which is hard to achieve in conventional integration schemes and is readily applicable to various on-demand integrated device applications.

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Electrically driven on-chip transferrable micro-LEDs

Min

Kim

Choi

et al. 2022

Applied Physics Letters

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In this study, we report the experimental demonstration of electrically driven on-chip transferrable microdisk light-emitting diodes (LEDs). A vertical p– i– n doped AlGaInP microdisk, including multi-quantum-well structures, is top-down-fabricated, on-chip micro-transferred, and converted into single micro-LEDs. Optically transparent and mechanically flexible multilayered graphene sheets are judiciously designed and introduced to the top and bottom surfaces of a single microdisk, thereby forming the top and bottom contacts. Using electroluminescence measurements, the fabricated micro-LEDs are characterized; they exhibit diode-like transport behaviors, spectroscopic light-out vs current ( L– I) characteristics, and polarization-resolved emission properties. We believe that the proposed all-graphene-contact approach offers a direct and easy current injection scheme and further helps electrify various on-chip transferrable microarchitectures.

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Hybrid Silicon Microlasers with Gain Patches of Unlimited Designs

Cited by 3 publications

References 38 publications

All-Graphene-Contact Electrically Pumped On-Demand Transferrable Nanowire Source

All-Graphene-Contact Electrically Pumped On-Demand Transferrable Nanowire Source

On-Demand Waveguide-Integrated Microlaser-on-Silicon

Electrically driven on-chip transferrable micro-LEDs

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