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 … [Read more...] about LASER and Fiber Questions and Answers | Notes
LASER
He-Ne Laser: Construction and working with Diagram
Explain He-Ne Laser under the following heads: Construction - working with Diagram. He-Ne Laser Construction: (i) Active medium: It is a gas laser, which comprises a narrow quartz tube filled with a mixture of helium and neon gases in the ratio of 10:1 respectively, at low pressure (~0.1 mm of Hg). Ne atoms act as active centers and are responsible for the laser action, … [Read more...] about He-Ne Laser: Construction and working with Diagram
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