You-Shin No

Affiliation: Konkuk University, Seoul

Research Interests: Low-dimensional optical nanomaterials and nanostructures and nanodevices

Title: On-Demand Hybrid-Integrated Photon Sources
Abstract: Silicon (Si) photonics has been receiving substantial attention as an integration platform in photonics research, owing to the ability to manufacture low-cost, compact integrated circuits. However, realizing efficient and high-quality light sources remain a major challenge. In this talk, I briefly discuss the recent progress of the photonic integration technologies and report on new developments of on-demand, align-transferrable micro-transfer-printing including several micro-manipulation techniques which are useful for addressing key challenges in photonic integration. First, we report on-chip transferrable low-threshold microdisk lasers by utilizing the microstructured polymer-assisted transfer-printing technique. In this work, we designed and fabricated an adhesive PDMS microtip and utilized it to micro-transfer-print single microdisk onto a small Si-post structure [1] and successfully operate rich lasing actions and couple the laser emission to a Si waveguide. Second, we also report on an all-graphene-contact approach to introduce the transparent and flexible electrical contacts to a vertically p-i-n doped active semiconductor nanostructure and to operate it by pulsed current injection [2,3]. Finally, we report on a recent result of an on-demand minimal gain-printed continuous-wave nanolaser-on-silicon at room temperature. The method and techniques in this talk can be very useful to facilitate light source integration in Si photonics and further help to realize high-density ultracompact photonic integrated circuits.