High Power Broadband Multispectral Source on a Hybrid Silicon Chip
Technical Report,28 Aug 2013,31 Dec 2016
University of California, Santa Barbara Santa Barbara United States
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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.
- Electrooptical and Optoelectronic Devices
- Lasers and Masers