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Laser diodes are semiconductor devices which convert an injected electrical power into an output of concentrated light at a specific wavelength, coherence and phase. Their fundamental structure is based on a doped p-n semiconductor junction. The specific recipe of semiconductor materials that is used, such as gallium and arsenide, is chosen based on its ability to produce a specific laser wavelength. When DC current is applied to the p-n semiconductor junction, holes are injected from the "p" doped portion of the semiconductor material and electrons are injected from the "n" doped portion. The recombination of an electron with a hole is essentially an electron from a higher energy level dropping to a lower level. The result of this energy change is the generation and emission of a photon. When specific semiconductor and optical design constraints are employed, this photon creation process can be controlled to yield a stimulated emission of concentrated laser light of the same wavelength: A technical introduction to laser diodes and basic design principles »

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WORLD LEADING BRANDS. We make it simple to purchase directly from leading suppliers Worldwide. We work only with trusted and verified suppliers. We make sure that your purchase is protected, safe, and that you receive the high quality products you order and are fully satisfied.

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NO MARK-UP'S. Manufacturer's set their own direct pricing on our platform. To ensure that you are getting the lowest price, all of the prices on our site are posted directly by the manufacturer or supplier. Prices are factory-direct with no mark-up's.

NO SALES PERSON in the middle. Get DIRECT access to the correct factory engineer for your product. Our platform’s messaging and email systems auto-route directly to the correct product engineer at the supplier. We eliminate the sales person "middle-man" back and forth time delays resolving technical issues. No more “Contact Us” forms. Every product has an assigned engineer in our messaging data-base to give you direct, immediate access to the correct tech-support info.