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Blue UV Laser pointers

Blue UV ( Ultraviolet ) 405nm Lasers are more Purple than BLUE

Blueray UV lasers are new devices that have applications in various areas that range from medical applications to optoelectronic data storage that are at high-density.

Credit goes to the successful development by numerous groups, the majority of which were Japanese. These research units include groups  headed by professor Isamu Akasaki and another one by Shuji Nakamura who were based at the Nichia Chemical Industries , Anan in Tokushima-ken, Japan. They have been able to make a series of great inventions and were able to develop the commercially workable blue and violet semiconductor lasers.

405nm 493mW 445nm 1167mW 650nm 201mW 405nm 100mW

The Nichia devices' active layer were formed through the InGaN quantum wells and through the quantum dots which spontaneously formed through self-assembly. Up until the 90s, when the development of blue semiconductor lasers took place, blue ray lasers were relatively large, not to mention extremely expensive gas laser instruments that primarily relied on population inversion done in rare gas mixtures. They also required high currents, along with strong cooling. This new invention gave way to the development of the smaller, more convenient and more affordable blue, violet and the ultraviolet or UV lasers that had not been available in the past. They also paved the way for newer and more advanced applications like high-density or HD DVD data storage as well as the Blu-ray discs. With the shorter wavelength, the reading of those discs that contain more information and data is allowed. Blue ray lasers typically operate at 405 nanometers.

There has also been comprehensive research done at  UNIPRESS located in Warsaw, Poland, under the direction of Professor Sylwester Porowski. All of the inventions that are developed in the institute are eventually commercialized by TopGaN, which is a Warsaw-based company.

Now, if you decide to purchase a blue ray laser or a blue UV laser pointer for whatever purpose you may have, make sure that you consider all aspects. There are lasers with improved power. Market competition drives manufacturers to produce high-quality lasers for cheaper prices,and dur to mass production of 405nm laser diodes for BLU ray DVD players this diodes cost price is low , making purchasing a jand portable laser or low powered laser pointer feasible , however due to the nature of the colour of the light produced is not very effective for presentations , the most interesting effect is the CHANGE of visable colour from purple to blue ( around 473nm ) when you point the laser dot at white card !

It is important to remember the manufacturer's guidelines in using lasers. Even if the laser is only a cheap one, it can still produce intense light radiation. Laser manufacturers all warn against improper use of lasers because they can easily cause damage to the eyes due to the laser's dense light. The dispersal of beams in cheap lasers is different from higher-priced ones thus making them possibly more dangerous. In Particular Blu Ray Lasers create a fuzzy purple haze that is not pleasent to the eye at high power levels.


Video and power output information of video sourced and copyright of youtube.