A 40 year old male patient came for routine dental checkup. Patient gives history of root canal treatment with 17 and 27 done using excimer. This type of lasers are:
The lasers range from long wavelengths (infrared), through visible wavelengths, to short wavelengths​ (ultraviolet). Excimers are special ultraviolet lasers.​
Special infrared lasers​
Special ultraviolet lasers​
Special visible light lasers
Special blue light lasers​  ​