High Power Broadband Multispectral Source on a Hybrid Silicon Chip
Abstract
Successful demonstrations of integrated lasers and beam combiners spanning the near-infrared (NIR) to the midwave-infrared (MWIR) are presented. Multi-spectral lasers integrated on Si are shown and various waveguide materials suitable for wavelengths from the ultra-violet (UV) to the longwave-infrared (LWIR) are discussed. Recent work integrating 2.0-microns diode and 4.8-microns quantum cascade lasers (QCLs) on Si extend the previously demonstrated 1.0-microns, 1.3-microns, and 1.5-microns diode lasers on Si to the MWIR. Distributed feedback (DFB) QCLs integrated on the silicon-on-nitride-on-insulator (SONOI) waveguide platform are demonstrated and emit over 200 mW pulsed output power at room temperature. Improvements are made to the 1.5-microns diode lasers to increase output power and brightness. Spectral beam combining elements with low loss for the visible (VIS) to the shortwave-infrared (SWIR) are demonstrated and devices are fabricated (measurements in progress) in the MWIR. We detail the results of this project including the motivations, applications, and project outcomes. We summarize insights and projections of the output power and spectral bandwidth that we expect are feasible to demonstrate with further research.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 14, 2017
- Accession Number
- AD1029822
Entities
People
- Alexander Spott
- Eric J. Stanton
- John E. Bowers
Organizations
- University of California, Santa Barbara