Answer all the questions :
1.Why the output of the Nd.YAG laser with Xenon/Krypton flash lamp is pulsed?
2.Why the rays making smaller and greater angles are arriving at same instant in graded index fiber?
3.Why the field of view changes to bright when a QWP is introduced .
4.What is the path difference if a glass plate of ref.index and thickness t is introduced in one of the paths of two coherent rays from same source.
5.What is the use of He gas in CO2 gas laser?
6.What is the change in the field of view of telescope in a M.I. experiment , if a compensation plate is introduced?
7. What happens when a ray of light is allowed to pass through the optic axis of a crystal?
8. At what angles of optic axis, an elliptically polarised light cannot be produced?
9.What is the purpose of having a metastable state in lasers?
10.What is the need for population inversion?
No comments:
Post a Comment