Abstract

Two-dimensional van der Waals layered materials are integrated with photonic crystal waveguides to form self-aligned hybrid nanocavities. The authors demonstrate cavity formation using hBN, WSe2, and MoTe₂ flakes on silicon photonic crystal waveguides, achieving loaded Q factors up to 4.0 × 10⁵ and observing cavity-enhanced photoluminescence in a MoTe₂ device with a Purcell enhancement factor of about 15. Simulations show that even monolayer flakes can induce cavity formation and that thinner flakes support higher Q factors.

Abstract

Two-dimensional van der Waals layered materials are integrated with photonic crystal waveguides to form self-aligned hybrid nanocavities. The authors demonstrate cavity formation using hBN, WSe2, and MoTe₂ flakes on silicon photonic crystal waveguides, achieving loaded Q factors up to 4.0 × 10⁵ and observing cavity-enhanced photoluminescence in a MoTe₂ device with a Purcell enhancement factor of about 15. Simulations show that even monolayer flakes can induce cavity formation and that thinner flakes support higher Q factors.

Abstract

Two-dimensional van der Waals layered materials are integrated with photonic crystal waveguides to form self-aligned hybrid nanocavities. The authors demonstrate cavity formation using hBN, WSe2, and MoTe₂ flakes on silicon photonic crystal waveguides, achieving loaded Q factors up to 4.0 × 10⁵ and observing cavity-enhanced photoluminescence in a MoTe₂ device with a Purcell enhancement factor of about 15. Simulations show that even monolayer flakes can induce cavity formation and that thinner flakes support higher Q factors.

Abstract

Two-dimensional van der Waals layered materials are integrated with photonic crystal waveguides to form self-aligned hybrid nanocavities. The authors demonstrate cavity formation using hBN, WSe2, and MoTe₂ flakes on silicon photonic crystal waveguides, achieving loaded Q factors up to 4.0 × 10⁵ and observing cavity-enhanced photoluminescence in a MoTe₂ device with a Purcell enhancement factor of about 15. Simulations show that even monolayer flakes can induce cavity formation and that thinner flakes support higher Q factors.