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Post by luggage1 on Nov 24, 2011 5:24:50 GMT -5
The color of the laser's light depends on the wavelength of the photons, which depends on the properties of the atoms or molecules comprising the gain medium. The most common gain medium material for a blue laser diode is gallium nitride (GaN), a crystalline semiconductor. Indium nitride (InN) is also used, as is indium gallium nitride, an alloy of the two.
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Post by belly143 on Nov 24, 2011 5:44:40 GMT -5
Blue laser diodes are more difficult to make than many other types of laser, especially at higher power levels, but the short wavelength of blue light allows for greater precision. Blue laser diodes are used today for applications such as laser pointers and video projectors as well as in devices using high-definition optical discs, most prominently the Blu-ray format. CO2 Laser |
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