Electromagnetic radiations with a wavelength longer than the visible light, but are shorter than microwave radiation, are called infrared lasers. Optical fibers are used for carrying infrared waves. Waves having wavelengths 1330 nm or 1550 nm are typically used with silica fibers. Procedures that involve welding and cutting equipment use infrared lasers. It is also used in equipments for engraving of materials. As they provide high power and fine band tunable light, they are used in equipments, which use photo acoustic (PA) techniques. In PA detection of gases, CO2 and CO lasers are usually used at present as they provide relatively high power.

Green lasers are the type of laser whose wavelength is in the green spectral region between 510 nm and 570 nm. Laser pointers, laser projection displays, and interferometers use green laser technology. Also, when pumping solid-state lasers such as Ti-sapphire lasers, green laser technology is used. Since they have a much higher absorption coefficient when compared to near-infrared lasers, green lasers are also used in processing of different types of materials like copper, gold and silicon.

The range of applications for Green lasers is limited, because they carry a low spectrum range. Still, they are the most common visible lasers due to their uniqueness.

Green is the brightest color in the visible light spectrum with its wavelength of 532nm. When a laser is used to flux this light into a high power output projected as laser beam, it gets the brightest possible laser light frequency. Because of this feature green laser pointers are the most popular form of hand held laser technology available in the market today.

Argon-ion lasers, one of the most common lasers, are created with the amplification of light in argon plasma that is formed with an electrical discharge. Since they can achieve the highest amount of power at 514 nm, they are potent light sources for various wavelengths. Green lasers, on the other hand, easily exceed this limit. But the drawbacks are that it would have to have high electrical power usage of many kilowatts, and a significant increase in the magnitude of the cooling systems. For generating green laser beams at 10 mille watts, small air-cooled tubes are used which require hundreds of watts of electrical power. The tube's operational life is only a few thousand hours. So they are to be changed very frequently and are very expensive to acquire.

Scientists are researching on how to develop a mechanism that will make it possible to transmit electronic data through green lasers. If this is successfully developed at moderate costs, it will change the way people communicate with each other. Thus, green lasers appear to be a catalyst that can change the communication industry in and out.

Even though Green laser beams are extremely useful in technical field it also demands extreme caution. If a 532 nm green laser directly pointed into a person's eye, there is a threat of laser retinal damage. To avoid any green laser eye damage, proper safety measures should be applied all the time while working with them. All green lasers should include standard safety features, but it is ultimately the responsibility of the user to be sure that all spectators and themselves are safe.