D. T. D. Childs

Learn More
Very thin slices of the superficial and deep layers of osteophytic and apparently normal articular cartilage from six human osteoarthritic femoral heads were digested with papain. The digests were analyzed for keratin sulfate content using an enzyme-linked immunosorbent assay (ELISA) with inhibition step, and for chondroitin sulfate and collagen contents(More)
We demonstrate a semiconductor PCSEL array that uniquely combines an in-plane waveguide structure with nano-scale patterned PCSEL elements. This novel geometry allows two-dimensional electronically controllable coherent coupling of remote vertically emitting lasers. Mutual coherence of the PCSEL elements is verified through the demonstration of a(More)
Optical coherence tomography (OCT) allows for the generation of 3D tomographic images of sub-surface structures in-vivo. This non-destructive, non-ionising process has found application in biological science and clinical diagnosis. Specifically, two versions of the OCT technique have proved optimal for different applications. For retinal imaging through a(More)
A high-performance superluminescent light-emitting diode (SLD) based upon a hybrid quantum well (QW)/quantum dot (QD) active element is reported and is assessed with regard to the resolution obtainable in an optical coherence tomography system. We report on the appearance of strong emission from higher order optical transition from the QW in a hybrid QW/QD(More)
Innovation in integrated photonics and associated fields is imperative with looming bottlenecks in the existing internet infrastructure due to rapidly increasing demand, across society and industry, for greater bandwidth and data access. A priority in this field is the development of a monolithic photonic integrated circuit (PIC), simplifying the design,(More)
  • 1