Explain He-Ne Laser under following heads: Construction - working with Diagram. He-Ne Laser Construction: (i) Active medium: It is a gas laser, which consists of a narrow quartz tube filled with a mixture of helium and neon gases in the ratio 10:1 respectively, at low pressure (~0.1 mm of Hg). Ne atoms act as active centers and responsible for the laser action, while He … [Read more...] about He-Ne Laser: Construction and working with Diagram
LASER
Ruby LASER: Construction and working with Diagram
Explain Ruby LASER under the following heads: Construction - working with Diagram. Ruby LASER Ruby LASER Construction: (i) Active medium: It is a solid-state laser, in which a rod of a synthetic ruby crystal is used as an active medium. The ruby crystal is obtained by doping a small amount (about 0.05% by weight) of chromium oxide (Cr2O3) in Aluminum oxide (Al2O3), so that … [Read more...] about Ruby LASER: Construction and working with Diagram
Characteristics of LASER light | Types of LASER
What are the Characteristics of LASER light? What are the properties of LASER Light? How many types of LASER? The LASER has following characteristics: i) Monochromatic: We know that the wavelength (or the frequency) of light decides its color. The ordinary light contains several electromagnetic waves of different colors (or different wavelengths). Generally, in a … [Read more...] about Characteristics of LASER light | Types of LASER
Components of LASER: active medium, Pumping system and Optical resonator
What are the main components of LASER? Components of LASER There are three basic components of a LASER: (i) active medium, (ii) pumping system and (iii) optical resonator (i) Active medium: The active medium in LASERS may be a solid, liquid, or gas. Different active media emit different energies or wavelengths of light. The basic requirement for the active medium of a … [Read more...] about Components of LASER: active medium, Pumping system and Optical resonator
LASER: Population inversion & Meta stable state
Define Population inversion & Meta stable state in LASER. Population inversion: Under normal thermal equilibrium conditions, the number of atoms in the lower energy state (N1).of a material is always larger than the number of atoms in the excited energy state (N2). In this situation, the probability of stimulated emission is much less than the probability of stimulated … [Read more...] about LASER: Population inversion & Meta stable state