The green laser pointers form the best image and the most difficult of image creation process for the human eye. The human eye responds the most to the green color and most sensitive to human eye retina. The human eye retina responds the most to green laser light diodes. The certain country law does not permit the selling and buying of laser products beyond a certain frequency. Some countries only provide class 3 products. The class is further divided to 3a and 3b. 

The laser pointer technology comes from different origins. The human eye sensitivity decreases as the color scheming changes to blue or red. The laser pointers are best used in school or college visual presentations. The green laser pointers are also used for other purposes too. The art is used in college presentations. 

The hologram process comes from the Greek origin and from there; the laser technology came into existence. The country law does not permit selling the laser based products less than a limited frequency. Certain class of lasers can damage human eye if used extensively. They can damage the retina or cornea of human eye. 

The laser engraved pen can also be used and certain other technologies can also be used. Blue laser pointers were also in fashion but reduced in popularity as green laser pointers became popular. The stylish designs can either be developed by the firms selling the hologram products. You can either develop it as a profession or make your own firm of the holo products.