Multi-Spectral Quantum Cascade Lasers on Silicon With Integrated Multiplexers
Abstract
Multi-spectral midwave-infrared (mid-IR) lasers are demonstrated by directly bonding quantum cascade epitaxial gain layers to silicon-on-insulator (SOI) waveguides with arrayed waveguide grating (AWG) multiplexers. Arrays of distributed feedback (DFB) and distributed Bragg-reflection (DBR) quantum cascade lasers (QCLs) emitting at ∼4.7 µm wavelength are coupled to AWGs on the same chip. Low-loss spectral beam combining allows for brightness scaling by coupling the light generated by multiple input QCLs into the fundamental mode of a single output waveguide. Promising results are demonstrated and further improvements are in progress. This device can lead to compact and sensitive chemical detection systems using absorption spectroscopy across a broad spectral range in the mid-IR as well as a high-brightness multi-spectral source for power scaling.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 24, 2019
- Source ID
- 10.3390/photonics6010006
Entities
People
- Aditya Malik
- Alexander Spott
- Charles Merritt
- Chul Kim
- Eric J. Stanton
- I. Vurgaftman
- Jerry Meyer
- John E. Bowers
- Jon Peters
- Junqian Liu
- Michael L. Davenport
- Nicolas Volet
Organizations
- Air Force Research Laboratory
- Office of Naval Research
- Swiss National Science Foundation