Underwater Wireless Optical Communication (UWOC)
Underwater Wireless Optical Communication (UWOC) has developed in many aspects over the past few years, with significant contribution from the Photonics Lab at KAUST.
Visible Light Communication (VLC)
1.1 GHz of modulation bandwidth in LD based VLC without a limitation from the slow 3.8 MHz phosphor response. A high data transmission rate of 2 Gbit/s was achieved without an optical blue filter using OOK modulation scheme.
InGaN-based Superluminescent Diodes (SLDs)
Amplified spontaneous emission from SLD shows balanced emission power and peak FWHM (> 6 nm at 100 mW). Pumping a YAG:Ce phosphor, the SLD served as a white light engine.
Integrated Waveguide Modulator - Laser Diode (IWM-LD)
By seamlessly combining waveguide-modulator and laser diode emitting on semipolar-plane substrate, a small-footprint, high-speed, low power-consumption device having the SSL-VLC dual-functionalities was investigated. Our approach enables the platform for high data-rate SSL-VLC dual-function lamps for eventual realization of smart-lighting and internet-of-things.
Quantum Well Intermixing in III-nitrides
The first experimental report of quantum well intermixing in InGaN/GaN quantum wells. Soft potential profile InGaN/GaN QWs by metal/dielectric induced intermixing. Unique area-selective, post-growth approach in engineering the quantum-confined potential-energy profile of InGaN/GaN quantum wells (QWs) utilizing metal/dielectric-coating induced intermixing process.
Ultrathin Gallium Nitride Nanomembranes
For the first time, the chemical exfoliation of completely TD-free, single-crystalline, ultrathin (tens of nanometers) GaN nanomembranes is demonstrated using UV-assisted electroless chemical etching. These Nano membranes can act as seeding layers for subsequent overgrowth of high-quality GaN.
Broadband Semiconductor Lasers
Investigation in quantum dot/dash nano-structures to enable the next generation of semiconductor broadband light emitting devices.
Gallium Nitride Photonics
Research on a variety of gallium nitride based nanostructures for light generation in the broadband spectrum.
Manipulating and Reconfiguring Propagation of Light
We investigate on novel structures to trap, confine, and manipulate the propagation of light, taking from transformation optics and the inverse scattering problem.