The HeNe laser was the first continuous wave (cw) laser invented. A few months after Maiman announced the invention of the pulsed ruby laser pointer, Ali Javan and his colleagues W. R. Bennet and D. R. Herriott announced the creation of their continuous helium-neon laser. This gas laser is a four-level laser that uses helium atoms to excite neon atoms. The laser is produced by atomic transitions in neon atoms. The neon transition most commonly used in these lasers produces red light at 632.8 nm. But these lasers can also produce green and yellow light in visible light as well as ultraviolet and infrared light (Javan’s first He-Ne operates in infrared light at 1152.3 nm). By using a highly reflective mirror designed for one of many possible laser transitions, the output of a given HeNe laser engraver can be operated at a single wavelength.
By heating specific parts of the surface based on the expected result, a process of adding color to plastic or metal can be created, or it can be colored by laser coloring. Modifying the surface by controlling its pulse frequency, width, etc. will cause color and shadow changes, so it is important to know the desired result in advance.
When the plastic is colored, it can be colored through a foaming process. When manipulating polymers in plastics, a certain wavelength of color is produced, usually infrared to ultraviolet light.Metal coloration occurs through an oxidation process, which can be applied to previously treated and untreated surfaces. This provides users with more freedom of coloring effects, and can even be used for decorative applications.
As a result, lasers used for colored markings can generally operate over a wide range of frequencies, speeds, power levels, etc.
In daily life, we will come into contact with various trademark signs, including metal or non-metal trademarks, some with text, some with patterns, such as the Midea logo, Apple’s mobile phone logo, keyboard keys, mobile phone keys and cup graphics. , Canned production date, etc. At present, many such markings are achieved by UV blue laser pointer marking. the reason is simple. UV laser marking is fast and without consumables. Through optical principles, permanent marks can be printed on the surface of various substances, which is very helpful for anti-counterfeiting.
Therefore, experts recommend that you replace the toy that the cat can actually “kill” to end the laser pointer game. After playing with the laser for a few minutes, switch to a magic wand or a plush catnip toy so that your cat can turn teeth and paws into tangible things. If you choose an automatic laser toy, it should be a toy that shuts down at a fixed time so that your kitten will not be over-stimulated.