Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is stimulated emission?
💡 Hint: Think of how a photon triggers another photon.
Question 2
Easy
What does population inversion mean?
💡 Hint: Consider how we achieve more excited atoms in laser operation.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What process generates coherent light in lasers?
- Spontaneous emission
- Stimulated emission
- Thermal radiation
💡 Hint: Consider how photons interact in a laser.
Question 2
True or False: Optical cavities are only made of one mirror.
- True
- False
💡 Hint: Think about the structure of an optical cavity.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An Nd:YAG laser uses flashlamps for pumping. Explain the steps required to achieve laser action from the moment energy is applied.
💡 Hint: Consider each phase of energy conversion and subsequent processes.
Question 2
Design a simple experiment to demonstrate the principles of stimulated emission and population inversion using common classroom materials.
💡 Hint: Think about light reflections and interactions among different states.
Challenge and get performance evaluation