Fiber lasers are generally maintenance-free and feature a long service life of at least 25,000 laser hours. In this article, we’ll dive into each type of laser and for which applications each is most commonly used. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details). There are four main classes for visible-beam lasers: Class 2, Class 3R, Class 3B and Class 4. Some examples include. LINE LASERS: Let’s begin with the most common laser found on a jobsite, the line laser. We’ll also outline a few key products offered by DEWALT for each category. It will be listed either in Arabic numerals (1 2, 3R, 3B, 4) or in Roman numerals (I, II, IIIa, IIIb, IV). Lasers are used in many types of surgical procedures. The first two are relatively safe for eye exposure; the last two are hazardous. Cosmetic surgery (to remove tattoos, scars, stretch marks, sunspots, wrinkles, birthmarks, spider veins or hair) This makes the MOPA laser one of the most flexible lasers which can be used for many applications. Lasers are classified based on their potential for causing injury — especially eye damage, since the eye is most susceptible to excess laser light. Most laser products are required by law to have a label listing the Class. Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. Laser classes Lasers are classified for safety purposes based on their potential for causing injury to humans’ eyes and skin. A special type of fiber laser is the MOPA laser, where pulse durations are adjustable.