Erbium Glass : Key Features and Applications
The main attraction of erbium glass lasers lies in their wavelength range (approximately 1.53–1.56 µm), which offers eye safety. For the naked eye, the maximum permissible exposure (MPE) for 1.54 µm laser radiation is five orders of magnitude higher than that of the 1.06 µm neodymium laser, making it much safer for medical applications. Additionally, the 1.54 µm wavelength of erbium glass lasers aligns closely with the minimum loss spectrum in silicon waveguides, offering a unique advantage for applications outside of fiber configurations. Although the 1.54 µm wavelength laser has obvious eye safety advantages, erbium glass typically has lower efficiency, …