What is the difference between he-ne laser and ruby laser

Question

What is the difference between (Helium-neon)he-ne laser and ruby laser?

Answer 1

The difference between Helium-Neon Laser and Ruby laser are given below:

Helium-Neon Laser	Ruby Laser
These are gaseous State laser.	They are solid-state laser.
It requires electrical pumping.	It requires optical pumping.
The laser output is continuous in it.	It is in the form of pulse in the ruby laser.
It has high efficiency.	It has low efficiency.
There are no any defects due to crystalline imperfections.	The defects due to crystalline imperfections are present in it.