a) Explain the construction and working of He-Ne laser. Draw the ener…
Previous year question for Applied Engineering Physics.
Question
a) Explain the construction and working of He-Ne laser. Draw the energy level diagram and indicate the wavelength of radiation.
b) Calculate the acceptance angle and critical angle for an optical fibre whose core index is $1.48$ and cladding index is $1.39$.
- Year: 2014
- Subject: Applied Engineering Physics