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SK2411 Laser Physics 7.5 credits

Welcome to the Laser Physics course SK2411 !

Lasers have become indispensable part of the technologies which are used nowadays in research, industry and consumer products. The Laser Physics course SK2411 will give students understanding of the main underlying principles behind laser operation, will provide up-to-date guidance of modern types of lasers and will give sufficient theoretical and, importantly, practical knowledge for designing and building actual lasers. Substantial emphasis during the lectures will be placed to different applications of the laser technologies. Students will be able to apply directly their previous knowledge in basic physics, electromagnetic waves and quantum mechanics and see how this knowledge eventually leads to the laser engineering solutions used in multiple fields in the modern world.

Choose semester and course offering

Choose semester and course offering to see current information and more about the course, such as course syllabus, study period, and application information.


For course offering

Spring 2025 Start 14 Jan 2025 programme students

Application code


Headings with content from the Course syllabus SK2411 (Spring 2022–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

Essentials of quantum-mechanical description of optical gain media, including atoms, molecules, and solid state materials.

Essentials of quantum-mechanical description of the of the interaction between photons and electrons in optical gain media.

Basic properties of lasers and photon amplifiers.

Physical principles of laser action.

Essential knowledge of laser building blocks.

Overview of the most important laser types.

Intended learning outcomes

Student after the course should be able to:

  • explain operational principles and construction of lasers
  • give an account of technological issues behind laser construction
  • describe optical components that can be used to tailor the properties of the laser
  • relate the laser operation principles to atom and molecular physics, solid state physics, quantum mechanics and physical optics.

Literature and preparations

Specific prerequisites

English B / English 6

Recommended prerequisites

Quantum mechanics atom physics, physical optics.


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Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

A, B, C, D, E, FX, F


  • LAB1 - Laboratory Work, 2.0 credits, grading scale: P, F
  • TEN1 - Examination, 5.5 credits, grading scale: A, B, C, D, E, FX, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Written exam (TEN1; 5,5 hp, grading scale A/B/C/D/E/Fx/F)Lab reports (LAB1; 2 hp, grading scale P/F)

Opportunity to complete the requirements via supplementary examination

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Opportunity to raise an approved grade via renewed examination



Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course room in Canvas

Registered students find further information about the implementation of the course in the course room in Canvas. A link to the course room can be found under the tab Studies in the Personal menu at the start of the course.

Offered by

Main field of study

Engineering Physics, Physics

Education cycle

Second cycle

Add-on studies

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Valdas Pasiskevicius (