Blue Laser Pointers ?EUR" What They Are and Their Use

Star gazers often use blue laser pointers to isolate particular starts; which they would want other partaking in the pass-time activity to take note of. The pointers emit beams of about 473 (nm) nanometers through the frequency doubling mechanism. The doubling mechanism results in a laser radiation of about 946 nm.

 

There are blue laser pointers which are engineered using inGaN semiconductors, in order to produce the blue hue; without the need to double the frequency of the beam. These types of diode lasers tend to produce longer wavelengths with brighter lights, exceeding 405 nm.

 

In summary, the blue laser pointers are used to point-out to objects. The light they produce is visible at great distances. They are useful during the night to get the attention of people at different locations. A point in case is expeditions or camping trips; groups of campers may get separated, and the diode lasers come in handy to help they locate each other. The light emitted by diode devices with high-powers, provide security to campers by scaring away wild animals. The beams are likewise used to send distress signals in emergency situations.

 

The blue laser pointers emit light in a blue hue, which is visible by the naked eyes. This is why they are commonly used in the academic field, to highlight key points on a blackboard. They are popularly used in higher learning institutions, where lecture halls may contain hundreds of students.

 

Blue laser pointers are also used to burn through plastic, light matches and cut through electric tapes as well as a number of other daily tasks. The wavelength these diode devices produce is powerful enough to carry out cutting and burning tasks. The lasers with higher powers are more effective when it comes to conducting burning tasks.

 

Blue laser pointers are not free from controversy. If not properly handled; when conducting burning and cutting tasks they could have a serious effect on the user's eye-sight. Safety goggles, which are specifically designed for laser use, should be worn at all times when burning objects using the diode devices.  The eyes are sensitive to the bright light produces by the devices and therefore exposure to the light should be limited to short periods of time.

 

Notably, it is illegal to point blue laser pointers at airplanes or any other aircrafts. Every laser user should comprehensively look into the legality of using these devices within their particular location. 

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04 Aug, 2011

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Source: http://goarticles.com/article/Blue-Laser-Pointers-What-They-Are-and-Their-Use/5094698/
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