LASER and Fiber fiber Questions and Answers in PDF
- What is a Laser? Give major properties of laser light. Or Explain in brief the characteristics of a laser beam. Or How does laser differ from ordinary light?
- What are Einstein’s coefficients? Derive Einstein’s relation. Or Explain the three quantum processes of interaction of radiation with the matter and derive the relationship between Einstein’s coefficients.
- What is meant by stimulated emission? Explain the basic condition in which stimulated condition dominates.
What is population inversion in lasers and how it is achieved?
- What is the principle pumping schemes?
- Explain the different components of the laser.
- Describe the construction and working of a ruby laser with help of a necessary
- Explain the construction and working of He-Ne laser with neat diagrams.
- Explain the construction and working of CO2 laser with neat diagrams.
- Describe construction and working of Nd: YAG laser with the help of necessary diagrams.
- What is optical fiber?
- Explain the principle of propagation of light waves in the optical fiber. What are acceptance angle, acceptance cone, and numerical aperture?
- Explain the types of fibers and their index profiles.
- What is the V-number or normalized frequency of an optical fiber?
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