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The wavelength of the laser in an optical drive is typically around 780 nanometers for a DVD drive and 405 nanometers for a Blu-ray drive. Different types of media require different wavelengths for reading and writing data accurately.

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1y ago

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Why there is a need of optical resonator in laser?

to increase the wavelength of the beam and increase the laser action


What is Lasor Drive in Computers?

The laser drive (optical drive), is the generic term for the CD, DVD or blueray drive. They all use laser light to read (and record) the discs.


How is only one colour produced by laserbeam?

A laser produces light of only one color because it emits a single wavelength of light. This is achieved by the specific properties of the laser medium and the optical resonator within the laser cavity that amplifies a specific wavelength. As a result, laser light is highly monochromatic, meaning it consists of a single color or wavelength.


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The laser inside the CD/DVD optical drive does the scanning.


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DVD is an optical disk storage media format.it uses 650 nm wavelength laser diode light as opposed to 780 nm for CD and 405nm for blue-ray disc.


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It is a compact disk. Or it could be anything under optical disk drive.


What does 532 wavelength mean in laser?

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A DVD drive uses a laser and an optical lens to read the surface of the disc itself, which contains several pits that contain data. If the laser hits pits, it is a 1. If not, it is a 0. The laser, containing data, comes back from the mirrored disc surface and into the optical lens, reading the information and therefore changing it into graphics, audio, and useful information.


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