Physics

A superluminescent diode (SLED or SLD) is a superluminescent edge-emitting semiconductor light source. SLD is a semiconductor light source that emits broad-spectrum light with a…

A laser diode (LD) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing…

The photovoltaic effect occurs when a material generates voltage and electric current when exposed to light. It is both a physical and chemical occurrence. It…

Optical physics is the study of the generation of electromagnetic radiation, its properties, and its interaction with matter, particularly its manipulation and control. It is…

A nanodevice created by Finnish researchers can detect microwave radiation’s absolute power down to the femtowatt level at extremely low temperatures, a scale a trillion…

A phosphoroscope is a piece of experimental equipment invented by physicist A. E. Becquerel in 1857 to measure how long it takes a phosphorescent material…

Phosphorescence, like fluorescence, is a type of photoluminescence. When exposed to shorter wavelength light (radiation), a phosphorescent substance will glow, absorbing the light and reemitting…

According to the IUPAC definition, Luminescence is the “spontaneous emission of radiation from an electronically excited species (or from a vibrationally excited species) that is…

Photoluminescence is a phenomenon in which a material emits light after absorbing photons. It is a type of luminescence, which refers to the emission of…

Photonic molecules are a theoretical natural form of matter that can also be created artificially in which photons bind to form “molecules.” They were predicted…

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a phenomenon that occurs when a…

A fundamental model in quantum mechanics that describes the behavior of a particle in a harmonic potential well is the quantum harmonic oscillator. It is…