Question

Please write about Lasers and their use in Physics

Answer 1

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Lasers Description

Laser science or laser physics is a branch of optics that describes the theory and practice of lasers.

Uses of Lasers

Lasers are used in below devices :-

• optical disk drives
• laser printers
• barcode scanners
• DNA sequencing instruments
• fiber-optic
• semiconducting chip manufacturing
• free-space optical communication
• laser surgery and skin treatments
• cutting and welding materials

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Answer 2

Answer:

Laser light has four unique characteristics that differentiate it from ordinary light: these are. Coherence; Directionality; Monochromatic; High intensity; Coherence. We know that visible light is emitted when excited electrons (electrons in higher energy level) jumped into the lower energy level (ground state). The process of electrons moving from higher energy level to lower energy level or lower energy level