About Lesson
Lasers are categorized based on their active medium and application:
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Solid-State Lasers:
- Use crystals or glass as the gain medium (e.g., Nd:YAG, Ruby).
- Commonly used in surgical procedures and industrial cutting.
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Gas Lasers:
- Utilize gases such as helium, neon, carbon dioxide, or argon (e.g., CO₂ lasers).
- Employed in cutting, engraving, and welding applications.
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Semiconductor Lasers:
- Also known as diode lasers, these are used in data storage devices, laser printers, and fiber optics.
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Dye Lasers:
- Liquid dye solutions are used to generate tunable laser light for scientific research.