AKTU Laser Systems and Applications (BOE312 / BOE412) Syllabus PDF – B.Tech Open Elective

Course Outcomes

On completion of course the students are able :

CO No. CO Statement BTL CO1 To understand the basic concept of coherence , absorption and emission process of Understanding radiation.

CO2 To understand the concept of population inversion necessary for laser action and laser Understanding, gain and optical cavities. Analyze CO3 To understand the laser action in various energy levels. Understanding, Apply CO4 To study different types of lasers such as gas laser liquid laser solid laser, semiconductor Understanding, laser with examples. Apply CO5 To know the application of laser in different fields such as medical, industrial, Apply communication etc. applications along with safety consideration.

Unit –I Laser Introduction, Energy Levels and Transition:

Introduction, Definition, Properties of laser beams, Concept of coherence, Temporal coherence, Spatial coherence, Longitudinal Coherence length, Transverse Coherence length, Absorption, Spontaneous Emission and Stimulated emission processes with its characteristics, Einstein’s A and B coefficients and Relation between these coefficient. [8] Unit –II Laser Amplifiers and Oscillations Population inversion, Meta stable state, Pumping- types, Optical pumping methods, Two, three and four level pumping schemes, Gain in lasers, Gain factor, Optical Cavities/Resonators, Fabry-Perot optical resonator, Loop gain, Gain at threshold, Stability, Stability diagram. [9] Unit –III Laser component, Principle and Types.

Main components of Laser, Principle of Laser action, Introduction to general lasers and their types. Two, Three & Four level Lasers, CW Lasers, Pulsed Lasers, Method of Short pulse generation and its Measurement. [6] Unit –IV Specific Laser Systems:

Atomic gas Lasers – He-Ne laser, Argon Ion Laser; Molecular Gas Lasers- Carbon dioxide laser, excimer laser;

Liquid Lasers- Organic dye lasers, Solid Sate Lasers- Ruby lasers, Nd-YAG Laser, Semiconductor diode laser. [9]

UNIT-V Applications and Hazards and Safety Consideration :

Laser applications in medicine and surgery- effect of laser on biological tissues, diagnostic of disease, ophthalmology, general surgery, dermatology, dentistry, advantages and disadvantages; Laser applications in materials processing – hole drilling, cutting, laser hardening, advantage and disadvantage of laser in material processing; Laser applications in optical communication; Laser applications in metrology; Laser applications in LIDAR; Laser applications in holography; Laser hazards and safety consideration. [10]

Reference Books

1. K.R. Nambiar, “Laser Principles, Types and Application” New Age International.
2. S. A. Ahmad, “Laser concepts and Applications” New Age International.
3. A. K. Katiyar, C. K. Pandey and Manisha Bajpai, Fundamentals of Laser Systems and Applications.
4. B. B. Laud, “Lasers and Non Linear Optics” New Age International.