Laser Physics for II Sem Complementary Physics, Course includes
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Laser principleThe theory behind laser generation is described by the acronym LASER, which stands for Light Amplification by Stimulated Emission of Radiation.
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Laser propertiesLasers produce a beam of light with a well-defined wavelength, and are narrow and convergent. The properties of lasers make them useful in clinical settings, but they also have potential hazards.
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Population inversionA concept in laser physics related to statistical mechanics. In a system of atoms, there are usually more atoms in low energy states than in higher ones.
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Stimulated emissionA process that produces a laser beam. An electron is stimulated from a higher energy level, and then emits photons as it moves to a lower energy level.
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Laser beam characteristicsLaser beams are monochromatic, coherent, and collimated. Monochromatic means the beam is a single color or wavelength. Coherent means the different parts of the beam oscillate in sync. Collimated means the beam is typically collimated, or can be collimated with a lens.
- Teacher: Pradeesh K