Handheld Lasers

handheld lasers

The handheld lasers are laser pen, laser pointer,laser dazzler,laser sight,laser Distance Measurer and so on. They're all handheld lasers. You need to choose the right handheld laser according to its usage.  Most of the handheld lasers are laser pointes if you search handheld lasers on google or yahoo.  The handheld lasers that you can purchase at eBay is low power handheld lasers. How to Choose a Handheld Laser? 

1 Decide on a wavelength. Red, green, and blue are common colors to choose from, with red operating around 660nm, green at 532nm, and blue at 473nm. For a more unique color, get a yellow handheld laser, which operates at 593.5nm, and for no color at all, the infrared laser is completely invisible at 1064nm.

2 Choose a power. The standard handheld laser operates at around 3-5mW, while the most powerful handheld lasers can be strong as 400mW--or 100x as powerful as a standard laser . To put this in perspective, military-grade lasers need to be at least 100kW, or 250,000x as powerful as a handheld laser, and 25 million times as powerful as a standard handheld laser.

How powerful of a handheld laser pointer you get depends on what you want to use it for. For pointing out objects, brighter is always better. If you want a clear beam in the night sky--get at least a 35mW, for igniting matches--get a 150mW, for igniting a fireworks fuse--at least a 300mW is necessary, and for burning through cardboard or thick plastic--get a 400mW.

3 Determine your desired sustained and peak outputs. Because the power of a handheld laser peaks and then declines, lasers are rated in sustained--the average output power over a period of time, and peak--the highest output power the laser will reach before the power begins to decline.

The best handheld laser will have a sustained output measured over a longer period of time than a cheap handheld laser. This is because it's easy to inflate the sustained output measurement if you measure for a short period of time around the peak, rather than measuring for a longer period after the power output has stabilized and has dropped well below the peak.