Early laser pointer only uses 633nm helium-neon (HeNe) gas laser, typically for generating power of not exceeding 1mW laser beam. The cheapest laser pointer uses near 670nm/650nm dark red laser diode. Slightly more expensive laser pointer uses 635nm red laser diode, with near orange red color laser light. 635nm wavelength is much more easily recognized by human eyes. At the same time, there are other colors of laser pointers, the most common is the wavelength of 532nm green laser pointer.

1. What is the difference from red laser and green laser?
Red laser gets wavelength of 635nm and 650nm, and green laser gets wavelength of 515nm, 520nm and 532nm. Different wavelength laser gets different color laser beam and light spot in operation.

When laser pointer is in formal work, it always requires certain operating environment. Generally its acceptable operating temperature is range from 10 degree to 40 degree Celsius. Some special laser pointers might be workable under operation temperature with range level of 0-40 degree Celsius, or even lower operating temperature.

In various high tech and entertainment working fields, laser pointers are always widely used in every corner of the world. Someone might use a laser pointer without any problem more than 2 years. However, laser pointer might also burn out after very short term. Besides self problems of laser pointer, it is also very important to make proper operation of this laser gadget.

Available with the finished green laser diode inner structure, 515nm green laser pointer is able to provide a highly stable laser emitting in various presentation fields. Users can have a complete different and wonderful experience with this great created laser pointer.

Laser pointers are usually used as an eye-catching point in education, business presentation, and visual demonstrations.
1. Red laser pointer can be used in almost any indoor or low light situations, pointing out details by hand may be convenient.
2. Green laser pointer can be used for astronomy enthusiasts

Majority people are curious about how power a laser pointer can be, and relation between laser output power and wavelength. Which color laser pointer is the most powerful one with same range of output power? Even though with the same output power, different wavelength laser pointer would emit different power and energy.

Laser pointers have long been widely used by military forces, including visible and invisible infrared laser pointers. This special laser device allows a stable narrow over long distance beam in the wild.

Lots of laser pointers are available with different wavelength range in spectrum. The risk level varies from different part of the spectrum. Below shares hazards of laser pointers and laser alignments with different wavelength: