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5월 8일 진행되는 물리학과 세미나 안내드립니다.
일시: 2025.05.08.(목) 16:30-17:30
장소: 조만식기념관 311호
연사: 노유신 교수(건국대학교 물리학과)
제목: III-V/Si light source integration from on-demand to three-dimensions
초록: Despite the substantial progress being made in Si-based light modulation and detection and their large-scale, cost-effective, monolithic device integration technology, the realization of small, efficient, and reliable on-chip integrated light sources, for example, continuous-wave (CW) III-V semiconductor nanolasers and electrically driven micro-/nanoLEDs on Si at room temperature (RT) has remained a challenge due to the lack of appropriate integration schemes. Here, we introduce a simple, easy and damage-free micro-transfer-based manipulations that enables the realizations of on-demand Si-integrable RT CW nanolasers, electrically driven on-chip transferrable micro-/nanoLEDs and vertically heterogeneous integrable three-dimensional (3D) III-V/Si micro-resonators/light sources. A smartly designed InGaAsP gain structure in conjunction with an individually addressable and highly precise on-demand gain-printing technique addresses several key technological issues, demonstrating the RT CW operation with a low-thresholds of ~50 µW, the all-graphene-contact-assisted electroluminescence, and the spontaneous emission and its enhancement in 3D wood-pile-type PhC nanocavities. A simple demonstration of the on-demand gain-printing and the integrated Si-integrable light sources exhibit the potential of wide and ubiquitous adoption in Si photonics and photonic integrated circuit (PIC) communities.