Abstract
Data communication based on white light generated using a near-ultraviolet (NUV) laser diode (LD) pumping red-, green-, and blue-emitting (RGB) phosphors was demonstrated for the first time. A III-nitride laser diode (LD) on a semipolar (2021) substrate emitting at 410 nm was used for the transmitter. The measured modulation bandwidth of the LD was 1 GHz, which was limited by the avalanche photodetector. The emission from the NUV LD and the RGB phosphor combination measured a color rendering index (CRI) of 79 and correlated color temperature (CCT) of 4050 K, indicating promise of this approach for creating high quality white lighting. Using this configuration, data was successfully transmitted at a rate of more than 1 Gbps. This NUV laser-based system is expected to have lower background noise from sunlight at the LD emission wavelength than a system that uses a blue LD due to the rapid fall off in intensity of the solar spectrum in the NUV spectral region.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 17480 |
| Journal | Optics Express |
| Volume | 25 |
| Issue number | 15 |
| DOIs | |
| State | Published - Jul 12 2017 |
Bibliographical note
KAUST Repository Item: Exported on 2021-09-14Acknowledged KAUST grant number(s): SB140014
Acknowledgements: This work was performed at the King Abdullah University of Science and Technology (KAUST) and UCSB and was supported by the KACST(SB140013)-KAUST(SB140014)-UCSB Solid State Lighting Program (SSLP) and the Solid State Lighting and Energy Electronics Center (SSLEEC). A portion of this work was done in the UCSB nanofabrication facility, part of the National Science Foundation (NSF) funded by Nanotechnology Infrastructure Network (NNIN) (ECS-0335765) and the UCSB Materials Research Laboratory (MRL) center facilities supported by the NSF MRSEC Program (DMR05-20415).
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics