Quantum cascade lasers transfer-printed on silicon-on-sapphire
Abstract
We demonstrate coupling of the laser mode into a passive waveguide by transfer-printing fully processed mid-infrared quantum cascade lasers onto a silicon-on-sapphire platform. The laser waveguide mode is coupled into a silicon waveguide via an adiabatic taper. The experimentally achieved coupling efficiency of the taper is estimated to be ∼10%, and theoretical calculations show that coupling efficiency over 75% is achievable by reducing the adhesive layer thickness to below 100 nm. Light coupling to silicon waveguides is confirmed by images taken at the output facet of a 3-mm-long passive Si waveguide with a mid-infrared camera. Our technique enables the development of heterogeneous photonic systems integrated with a wide range of fully processed semiconductor laser devices, including buried-heterostructure lasers, which was not previously possible.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 20, 2017
- Source ID
- 10.1063/1.5002157
Entities
People
- D. Botez
- Jae Hyun Kim
- Jeremy D. Kirch
- L. J. Mawst
- Mikhail A. Belkin
- Seungyong Jung
Organizations
- Army Research Office
- Kwanjeong Educational Foundation
- National Science Foundation
- University of Texas at Austin
- University of Wisconsin–Madison