Laser (Light Amplification by Stimulated Emission of Radiation) is a device that emits light through a process of optical intensification based on the stimulated discharge of electromagnetic radiation. Laser light is essentially created by a laser device. Such light has some very distinct properties, which differentiates it from light of other roots. Laser light is usually transmitted in the form of a laser beam, i.e. it disseminate dominantly in a well-defined direction with moderate beam divergence. Laser beams has the special property that the light waves emitted coherently are of same wavelength and same colour. In numerous however not all cases, laser beams likewise has a much higher level of temporal coherence, which is equal to the long coherence length. In maximum cases, laser light is linearly polarized. This means that the electric field fluctuates in a specific spatial direction. Laser beam can travel over great distances or can be focused to a very small region with a brightness which outdoes that of the sun.
- High intensity lasers and high field phenomena
- Quantum electronics and laser science
- Quantum information and measurement
- Biomedical and therapeutic laser applications
- Laser spectroscopy and microscopy
- Fiber lasers and applications
- Semiconductor lasers and leds