Question

7. Explain five steps of lasing a
8. Describe He-Ne laser.
9. Derive acceptance angle usin​

Answer 1

Answer:

7.Lasing Process. The actual process that occurs during the production of a beam of laser light is known as lasing

8.The He-Ne laser is a relatively low power device with an output in the visible red portion of the spectrum. The most common wavelength produced by He-Ne lasers is 632.8nm, although two lower power (1.152µm and 391µm) infrared wavelengths can be produced if desired.

9.The light propagates through the fiber only when its angle of incidence at the launching end is less than or equal to a certain value. This maximum possible angle with the axis of the fibre up to which a light ray accepted into the core of the fibre is called acceptance angle.

Explanation:

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