Question
Download Solution PDFThe following is not a candidate material for Laser source in Fiber Optics
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
LASER: Light Amplification by Stimulated Emission of Radiation
- Lasers have found wide applications in areas as diverse as optical communications, medical surgery, welding technology, entertainment electronics etc.
- It is used highly because of the collimated nature of the laser beams and the consequent possibility of delivering a very high energy density in a limited region of space.
Depending on the material used for the active medium, lasers are broadly classified as:
(i) conventional or gas lasers
(ii) solid-state lasers
(iii) liquid lasers
(iv) semiconductor lasers.
Gas Lasers:
- Among the gas lasers, some of the most commonly used ones are Helium-Neon laser, Carbon dioxide laser and Argon- ion laser.
Solid-State Lasers:
- Typical examples of solid-state lasers are Ruby lasers, Nd-glass laser etc.
- Ruby laser consists of rods of ruby, which are Al2O3 with about 0.05% Cr with a highly polished mirror at one end and a semi-transparent mirror at the other.
- A xenon flash bulb is used to excite chromium atoms to their excited states.
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