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Quick Facts

Medium Of Instructions	Mode Of Learning	Mode Of Delivery
English	Self Study	Video and Text Based

Course Overview

The Introduction to LASER certification course provides a great deal of exposure to the scientists, teachers, working engineers, or anybody interested in knowing how LASERS work. Spread over 12 weeks, this elective course is offered by Prof. M. R Shenoy, a faculty of IIT Delhi. He joined IIT Delhi in 1988 and is known for his collaborative research on Integrated Optical Devices.

The Introduction to LASER certification syllabus gives students deep insights into the principle functioning behind the lasers. It also deals with the issues concerned with the design and output characteristics of the Lasers along with resonator physics.

The Introduction to LASER training is an ‘applied’ course in nature. It could be opted by students studying B.E/B.Tech (3rd/4th year)/M.Sc (2nd year)/M.Tech (1st year). Moreover, the course is approved by the AICTE as an FDP course. It mandates a sincere and regular effort on the part of the student to obtain expertise in the subject.

The Highlights

Course offered by IIT Delhi
Undergraduate/Postgraduate level course
Twelve-week course
Certification available
Elective course
AICTE approved FDP course
Open to freshers and working professionals
In-course assignments (for certification)
Course contents can be freely accessed.
E-certificates only

Programme Offerings

Course offered by IIT Delhi
Course contents can be freely accessed
Undergraduate/Postgraduate level course
In-course assignments (for certification)
Twelve-week course
Open to freshers and working professionals
Certificate available

Courses and Certificate Fees

Fees Informations	Certificate Availability	Certificate Providing Authority
INR 1000	yes	IIT Delhi

The Introduction to LASER certification fee is Rs 1,000 for obtaining the course certificate. There are no course fees to audit the course. You can learn freely. However, to write an exam and obtain a certificate, the candidates must pay the stipulated amount. The registration link for the same is provided after a few weeks, and all the enrolled candidates will be informed in advance.

Introduction to LASERS fee structure

Course name	Total fees
Introduction to LASERS (certification)	Rs 1,000

Eligibility Criteria

The Introduction to LASER certification requires the candidates to have a fundamental undergraduate-level knowledge of the concepts of optics, atomic physics, and electromagnetics. A basic understanding of these concepts will enhance the candidate’s capability of understanding the course better.

Certification qualifying details

To obtain a certification for the Introduction to LASER online course, all the students must appear and clear the end term proctored examination at an offline center designated by NPTEL.

What you will learn

Candidates who complete the Introduction to LASER online course will become adept in the following areas:

Laser oscillations
Transweevs modes of laser resonators
Hermite-Gauss modes of a spherical mirror resonator
Laser rate equations
Characteristics of LASER output

Who it is for

The Introduction to LASERS training is best suited for:

3rd year, 4th-year B.Tech/M.Sc (Physics/Electronics/ electronic sciences) students
M.Tech 1st sem students with no previous exposure to Lasers in any course
Working engineers with the zeal to know about Lasers

Admission Details

Follow the link mentioned below to reach the Introduction to LASER online course page: https://onlinecourses.nptel.ac.in/noc21_ph01/preview.
Upon reaching the Swayam Portal, click on the ‘Sign-in/Register’ button at the top of the course page to begin the admission process.
You will now be directed to a page that asks you to sign in either with your login credentials or your socials (Google/Facebook/Microsoft).
If you already have an account on Swayam, you can log in with those credentials, or you can also sign up.
Upon signing up, a new registration form appears where you must enter your name, email address, password, and verify these details with a verification code.
You can now proceed by filling in any other relevant details and completing the admission process.
Upon finishing, you will be directed to the portal, and you can start learning right away!

Application Details

Information such as educational details, contact information, occupational information, and personal details are required while creating an account. However, if you already have a Swayam Account, you can enrol in the Introduction to LASERS online training program by merely logging in.

The Syllabus

Part I

Interaction of Radiation with Matter General Introduction
Spontaneous and stimulated emissions
The Einstein coefficients

Line shape function
Homogeneous and inhomogeneous broadening
Line-broadening mechanisms
Doppler and collision broadening

Part II

Scheme of Light Amplification
Rates of stimulated emission and absorption
Meta stable state
Laser action
Condition for amplification by stimulated emission

3- level and 4-level pumping schemes
Laser rate equations
2, 3, and 4 level laser systems
Condition for population inversion
Gain saturation

Laser amplifiers
Gain and bandwidth
Rare earth-doped fiber amplifiers.

Part III

Optical resonators plane mirror resonator
Cavity loss
Q factor
Cavity lifetime
Resonance frequencies

Ray paths in the resonator
Spherical mirror resonators
Stable and unstable resonators
Resonator stability condition

Hermite gauss modes of a spherical mirror resonator
Transverse modes of laser resonators
Gaussian beams in laser resonators

Part IV

Optical feedback
Laser oscillations
Threshold conditions
Variation of laser power near threshold
Optimum output coupling

Characteristics of laser output
Mode selection
Methods of pulsing lasers
Oscillation frequency
Q-switching
Mode locking
Single-frequency lasers

Part V

Some Laser Systems: Ruby, He-Ne, Nd:YAG, Fiber lasers

Tunable lasers
Semiconductor lasers
Ti sapphire lasers
Laser safety

Evaluation process

Candidates who wish to obtain a certificate for the Introduction to LASER online course by Swayam must submit internal assessments and write the end-term proctored examination. To earn the certification, candidates must ensure that they achieve at least 40% marks in both assignments and tests.