The modulation of luminescence is essential because unwanted spontaneous‐emission
modes have a negative effect on the performance of luminescence‐based photonic devices …

We describe the recent experimental progress in the control of spontaneous emission by
manipulating optical modes with photonic crystals. It has been clearly demonstrated that the …

The large amount of light emitted from a light emitting diode (LED) being trapped inside the
semiconductor structure is the consequence of the large value of the refractive index. The …

Using time-resolved photoluminescence measurements, the recombination rate in an In
0.18 Ga 0.82 N/GaN quantum well (QW) is shown to be greatly enhanced when …

Nature provides us with a multitude of design solutions finely tuned by natural selection.
Biomimetic, taking the shortcut of “Learning from Nature”, transfers optimum designs in …

Limitations in extraction efficiency of gallium nitride (GaN) photonic crystal (PhC) light
emitting diodes (LEDs) are addressed by implementing an LED design using both two …

We discuss the Purcell effect, which enhances the spontaneous emission rate, in microdisk
lasers operating at room temperature by continuous wave photopumping. We theoretically …

We report Al x In 1− x As y Sb 1− y separate absorption, charge, and multiplication
avalanche photodiodes (APDs) that operate in the short-wavelength infrared spectrum. They …

Self-assembled GaN nanocolumns were grown on sapphire and Si substrates by rf-plasma-
assisted molecular-beam-epitaxy, clarifying the growth condition. The nanocolumn crystal …

We demonstrate a light-emitting diode exhibiting 1.7–2.7-fold enhancement in light
extraction efficiency compared with that for a planer device. It has a two-dimensional surface …