Absorbtion of Energy: The electrons in an atom are circling the nucleus in many different orbits.These orbits have different energy levels of the atom.If we apply some heat…

http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html Lasers The stimulated emission of light is the crucial quantum process necessary for the operation of a laser. Population…

MAR BASELIOS CHRISTIAN COLLEGE OF ENGINEERING & TECHNOLOGY PEERMADE DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING SEMINAR REPORT ON FREE SPACE OPTIC TECHNOLOGY…

Optical Sources & Detectors Navneet Singh Aulakh Scientist CSIO, Chandigarh. Block diagram of Optical Communication System TRANSMITTER 1 2 3 RECEIVER Fiber splice 1 2…

Table of Contents Table of Contents .................................................................................................................................... 1…

1.   Definition of lasers  Emission and absorption of radiation  Population Inversion  Semiconducting lasers  Materials used for semiconducting laser …

1. MAIN FEATURES OF A LASER  DIRECTIONALITY  INTENSITY  MONOCHROMATICITY  COHERENCE 2. PRINCIPLE OF LASER ACTION  SPONTANEOUS STIMULATEDEMISSIONEMISSION…

1. LasersThe history of lasers and their every day applications 2. LASER- Light amplification by stimulated emission of radiation A Laser is a mechanism for emittingelectromagnetic…

Slide 1Quantum Physics 10 hours Slide 2 The Quantum Nature of Radiation 13.1 - 13.4 Slide 3 The Photoelectric Effect In 1888, Heinrich Hertz carried out an experiment to…

Slide 1Light Sources – II The Laser and External Modulation Optical Communication Systems -Xavier Fernando Slide 2 The LASER Light Amplification by Stimulated Emission…