laser | Definition, Acronym, Principle, Applications, & Types | Britannica
What Is a Laser? | How Is Laser Technology Used?
Key Parameters of a Laser System | Edmund Optics
Lasers, explained by RP Photonics Encyclopedia; principle of operation, properties of laser light, applications, resonator, laser beam, stimulated emission
For New Users 4-How to Select Laser Machines: Main Parts of Laser Marking Machine–Max–from XT LASER – XTLASER