Applied Optics

By Prof. Akhilesh Kumar Mishra   |   IIT Roorkee
Learners enrolled: 1248   |  Exam registration: 120
About the course: This course provides an extensive exposure to the basics of classical optics. The course, in particular, discusses interference, diffraction, polarization, birefringence and optical activity and their applications in engineering in great detail. In addition, the basics of holography and lasers are also introduced.

PRE-REQUISITES:  Any 12 (in science stream) pass student can do this course. There are no prerequisite courses. 

INTENDED AUDIENCE: Undergraduate students.

INDUSTRY SUPPORT: All of the optics related industries such as Sterlite Technologies Limited, Finolex Cables Limited etc.
Course Status : Completed
Course Type : Core
Duration : 12 weeks
Category :
  • Physics
Credit Points : 3
Level : Undergraduate
Start Date : 24 Jul 2023
End Date : 13 Oct 2023
Enrollment Ends : 07 Aug 2023
Exam Registration Ends : 18 Aug 2023
Exam Date : 29 Oct 2023 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Module 1: Introduction of geometrical optics and ray theory, Fermat’s principle, refraction from single and double interfaces
Module 2: Matrix method in paraxial optics, thick and thin lenses, unit planes, nodal planes, system of thin lenses
Module 3: Concept of wavefront, Huygens’ principle and its applications, superposition of waves, introduction to polarization, linear, circular and elliptical polarizations
Module 4: Interference of light waves, Young’s double slit experiment, interference of polarized light, interference with white light, displacement of fringes, Fresnel’s biprism
Module 5: Interference by division of amplitude, thin parallel films, wedge shaped films, Newton’s rings, Michelson interferometer and its applications
Module 6: Multiple beam interference, Fabry–Pérot interferometer and etalon, concept of coherence
Module 7: Introduction to diffraction, Fraunhofer diffraction, single, double and multiple slit diffraction
Module 8: Diffraction at a rectangular and circular apertures, diffraction grating, grating spectrum and resolving power, Fresnel diffraction
Module 9: Fresnel half period zones, vibration curve, circular obstacle, zone plates, rectangular aperture, diffraction of a plane wave by a long narrow slit and transition to Fraunhofer region, diffraction at a straight edge, diffraction by a narrow obstacle, Babinet’s principle
Module 10: Brewster’s law, Malus’s law, Phenomenon of double refraction, normal and oblique incidence, production of polarized light 
Module 11: Quarter and half wave plates, analysis of polarized light, optical activity, plane wave propagation in anisotropic media
Module 12: Antireflection coatings, basics concepts of holography, basics concepts and ray optics considerations of optical fiber, introduction to lasers

Books and references

 (i)  E. Hecht and A. R. Ganesan, “Optics”.

(ii)  A. K. Ghatak, “Optics”.

(iii)  F. A. Jenkins and H. E. White, “Fundamentals of Optics”.

(iv)  A. Ghatak and K. Thyagarajan, “Introduction to Fiber Optics”.

(v)  P. Hariharan, “Optical Holography”.

(vi)  A. K. Ghatak and K. Thyagarajan, “Optical Electronics”.

Instructor bio

Prof. Akhilesh Kumar Mishra

IIT Roorkee
Prof. Akhilesh Kumar Mishra received Ph.D. in Physics from IIT Delhi. During doctorate, he studied nonlinear propagation dynamics of ultrashort pulses in fibers and metamaterials. Subsequently he moved to Technion- Israel Institute of Technology, Israel, where he worked on light-matter interaction in semiconductor devices and later he shifted to Nanyang Technological University, Singapore, where he studied THz pulse generation in layered media using Inverse Spin Hall Effect. From Nov 2018 onward, Akhilesh Kumar Mishra is working as assistant professor in the Department of Physics at IIT Roorkee. His research interests include structured beams and pulses, ultra-fast dynamics in semiconductor devices, optical metamaterials, quantum optics and plasmonic sensors.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 
29 October 2023 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Roorkee.It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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