Lasers (Basics)

A laser differs from an ordinary light source: the photons in a laser light source are monochromatic, collimated, and coherent.

[@matesaktesak]

These videos are great! I really like the clean and organized explanation - I'd happily take a whole course with you.

[@mrkushdgr8]

nicely explained sir, would you please throw some light on population inversion as well sir.

[@PhysicalChemistry]

If you watch the next video in the sequence (Three-State Lasers) it explains population inversion. Just click on the inset that pops up at the end of this video, or use this link: kzbin.info/www/bejne/aoWvonl7f9xmjc0

[@SCSDivyaSri]

Good