Laser
A laser is a device that emits light (electromagnetic radiation) through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation. [1][2] The emitted laser light is notable for its high degree of spatial and temporal coherence, unattainable using other technologies.
Design
History
Types and operating principles : Gas lasers – Chemical lasers – Excimer lasers Solid-state lasers Fiber lasers Photonic crystal lasers Semiconductor lasers Dye lasers Free electron lasers Bio laser Exotic laser media
Uses
![Uses(сontinuation) Law enforcement: used for latent fingerprint detection in the forensic identification field[28][29] Research:](https://present5.com/presentation/138472729_57330507/image-7.jpg "Uses(сontinuation) Law enforcement: used for latent fingerprint detection in the forensic identification field[28][29] Research:")
Uses(сontinuation) Law enforcement: used for latent fingerprint detection in the forensic identification field[28][29] Research: Spectroscopy, laser ablation, laser annealing, laser scattering, laser interferometry, LIDAR, laser capture microdissection, fluorescence microscopy Product development/commercial: laser printers, optical discs (e. g. CDs and the like), barcode scanners, thermometers, laser pointers, holograms, bubblegrams. Laser lighting displays: Laser light shows Cosmetic skin treatments: acne treatment, cellulite and striae reduction, and hair removal. In 2004, excluding diode lasers, approximately 131, 000 lasers were sold with a value of US$2. 19 billion. [30] In the same year, approximately 733 million diode lasers, valued at $3. 20 billion, were sold. [31]
The End