Helium-Neon Laser

Principle: The difference between spontaneous and stimulated emission of light is demonstrated. The beam propagation within the resonator cavity of a He- Ne laser and its divergence are determined, its stability criterion is checked and the relative output power of the laser is measured as a function of the tube's position inside the resonator and of the tube current.
What you can learn about:
* Spontaneous and stimulated light emission * Inversion * Collision of second type * Gas discharge tube * Resonator cavity * Transverse and longitudinal resonator modes * Birefringence * Brewster angle * Littrow prism * Fabry Perot Etalon

Category:

Science & Technology

Tags:

• laboratory experiments
• physics
• applied sciences
• phywe
• natural sciences
• chemistry
• biology
• education
• how-to
• instruction
• TESS expert
• TESS advanced
• Cobra3
• Cobra4
• Demo

[iwonthisargument]

Really liked this demonstration. Well explained and very informative. Well done!