What is Optoelectronics?

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A new Laboratory of Advance Synthesis and Characterisation (LASC) at Gujarat is developing LASC probe stations for universities in India and abroad for investigation of opto-electronic properties in a wide range of materials.

About Optoelectronics

  • Optoelectronics is the study and application of light-emitting or light-detecting devices. 
  • It is widely considered a sub-discipline of photonics. Photonics refers to the study and application of the physical science of light.
  • Optoelectronics is a fast-emerging technology field that consists of applying electronic devices to sourcing, detection, and control of light. 
  • It is largely based on semiconductor materials. These exhibit suitable bandgap energies for absorbing near-infrared and visible light, and their electric conductivity (albeit not perfect) is also essential for such applications.
  • Examples of optoelectronic devices consist of: 
    • Telecommunication laser
    • Optical fibre
    • Blue laser
    • LED traffic lights
    • Photodiodes
    • Solar cells
  • These devices are used in a wide variety of application areas, such as military services, automatic access control systems, telecommunications, medical equipment, and more. 
  • Optoelectronics should not be confused with electro-optics, as this field is a wider branch of physics that deals with the interaction of electric fields and light, without concern if an electronic device is involved or not.

Q1) What are Photodiodes?

It is a form of light sensor that converts light energy into electrical energy (voltage or current). Photodiode is a type of semi conducting device with PN junction. Between the p (positive) and n (negative) layers, an intrinsic layer is present. The photo diode accepts light energy as input to generate electric current.

Source: New Laboratory of Advance Synthesis and Characterisation develops probe stations for universities to probe opto-electronic properties in range of materials