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Optoelectronics
From Wikipedia, the free encyclopedia
Optoelectronics is the study and application of electronic devices that interact with light, and thus is usually considered a sub-field of photonics. In this context, light often includes invisible forms of radiation such as gamma rays, X-rays, ultraviolet and infrared. Optoelectronic devices are electrical-to-optical or optical-to-electrical transducers, or instruments that use such devices in their operation. Electro-optics is often erroneously used as a synonym, but is in fact a wider branch of physics that deals with all interactions between light and electric fields, whether or not they form part of an electronic device.
Optoelectronics is based on the quantum mechanical effects of light on semiconducting materials, sometimes in the presence of electric fields.
- Photoelectric or photovoltaic effect, used in:
- photodiodes (including solar cells)
- phototransistors
- photomultipliers
- integrated optical circuit (IOC) elements
- Photoconductivity, used in:
- Stimulated emission, used in:
- lasers
- injection laser diodes
- Lossev effect, or radiative recombination, used in:
- light-emitting diodes or LED
- Photoemissivity, used in
Important applications of optoelectronics include:
- Richard Friend, Cavendish Professor, Cambridge, Research on Optoelectronics including development of new semi-conducting polymers Freeview video by the Vega Science Trust.
- Northwest Photonics Association
- OIDA (Optoelectronics Industry Development Association)
- COBRA Photonic Research, Eindhoven, The Netherlands