Engineering Physics Chapter 5

Lasers

This chapter is one of the most exam-friendly units in Engineering Physics because it includes direct theory questions, system diagrams, and application-based answers.

Why Study This Chapter

• important for stimulated emission, Einstein coefficients, and population inversion
• helpful for He-Ne laser and semiconductor laser working principles
• covers holography and practical laser applications asked in exams

Topics Covered

• 5.1 Introduction
• 5.1.1 Characteristics of Laser
• 5.2 Principle and Production of Laser
• 5.2.1 Induced Absorption
• 5.2.2 Spontaneous Emission
• 5.2.3 Stimulated Emission
• 5.2.4 Einstein's Coefficients
• 5.2.5 Requisites of a Laser System
• 5.2.6 Condition for Laser Action
• 5.2.7 Types of Lasers
• 5.3 He-Ne Laser
• 5.4 Semiconductor Laser
• 5.5 Applications of Laser
• 5.6 Holography
• Solved Problems
• Exercises

Related Study Links

• Open Full Engineering Physics Subject Note
• Go to Chapter 4: Dielectric and Magnetic Properties of Materials
• Go to Chapter 6: Optical Fibers and Superconductivity