?? : LASER

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• ?? LASER
• Light Amplification by Stimulated Emission of
  Radiation
• First Laser 1960 Theodore H. Maiman - Ruby
  Laser
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• ???? (Coherence)
• ???? (Monochromatity)
• ??? (Brightness)
• ???? (Directionality)
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• ??????(Threshold )

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Atomic Absorption and Emission of Irradiation
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Spontaneous Emission
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Stimulated Emission
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Population Inversion
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Ruby Laser ?????
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Laser Cavity Design Resonator
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Laser Mode Patterns
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Laser Modes
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• Gain Medium
• Solid State (Doped Insulator) Laser
• Gas Laser
• Dye Laser
• Semiconductor Laser
• Excitation Method
• Optical Pumping
• Electric Excitation
• Chemical Reaction
• Thermal Excitation

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• Operation Type
• Continuous Wave Laser
• Pulse Laser
• Operation Wavelength
• IR Laser
• Visible Laser
• UV Laser
• X-ray Laser

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He-Ne Laser
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GaAs Diode Laser
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Nd YAG Laser
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Dye Ring Laser
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Laser Chart
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Laser Physics
to be continued