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Ruby laser
Ruby Laser A Ruby laser is a type of laser that uses a laser crystal made of the mineral quartz (SiO2) to generate and emit laser light. The laser crystal i...
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Ruby Laser A Ruby laser is a type of laser that uses a laser crystal made of the mineral quartz (SiO2) to generate and emit laser light. The laser crystal i...
Ruby Laser
A Ruby laser is a type of laser that uses a laser crystal made of the mineral quartz (SiO2) to generate and emit laser light. The laser crystal is cut into a specific shape, usually a rectangular slab with a cavity, which acts as an active region for the light amplification.
Working Principle:
The Ruby laser operates based on the principle of stimulated emission. When an electron is excited to a higher energy level in the crystal, it can be stimulated to spontaneously emit a photon of light. This process involves the release of an electron from the higher energy level to a lower energy level, accompanied by the emission of a photon of light with the same energy.
Key Features:
Active medium: The active medium in a Ruby laser is the laser crystal, which contains the active centers for laser emission.
Cavity structure: The laser crystal is placed in a cavity, which helps to confine and amplify the laser light.
Stimulated emission: The laser operates by stimulating the absorption of photons by electrons in the crystal. When stimulated, the electrons are excited to higher energy levels.
Emission of light: The stimulated electrons spontaneously emit photons of light when they fall back to lower energy levels.
Emission spectrum: Ruby lasers emit light at a specific wavelength, typically around 690 nm.
Advantages:
High power output
Narrow beam width
Long coherence length
Resistance to environmental conditions
Disadvantages:
Limited wavelength range
High operating temperature
Fragility of the crystal