What type of laser is used in CD and DVD players?
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21 Citations | Such a laser is so versatile that it can be used for medical imaging, material machining and nonlinear optics. |
| Moreover, semiconductor lasers can be extremely compact, which is a crucial feature for applications in compact disc players, laser printers, and in telecommunication systems (where the most important emission wavelengths are around 1.3 μm and 1.55μm). | |
14 Dec 1988 8 Citations | The Compact Disc (CD) laser is suitable as the light source because it satisfies the computer system requirements for low cost, high data rate, miniaturized package, and high reliability. |
| A subluminal laser of this type may prove to be useful for many applications. | |
19 Citations | Several advantages arise from this novel type of intersubband laser. |
82 Citations | When used with visible laser diodes, the method may also be suitable for use in laser-based television. |
| However, the difference of the substrate thickness between DVD and CD causes the different spherical aberration and prevents the laser beam from being focused into a diffraction limt spot size with only one objective lens. | |
19 Citations | Using this technology, the number of optical components and the size and weight of a CD pickup are successfully reduced and its reliability is improved, because many functions of the optical components are integrated into a hologram-laser-photodiode unit. |
26 Citations | We report what is believed to be the first observation of lasing of an optically pumped thin CdS film formed by laser ablation on glass. |
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