Optical recording and reproducing device
专利汇可以提供Optical recording and reproducing device专利检索，专利查询，专利分析的服务。并且PURPOSE: To raise the data transfer speed and prevent the thermal damage of a recording medium by irradiating the recording medium with plural lasers different in wavelength simultaneously to perform recording and reproducing.
CONSTITUTION: Wavelengths of individual lasers of a laser array 1 where eight semiconductor lasers L1WL8 are arranged in the same chip are λ1Wλ8 different from one another. An active layer B is interposed between grad layers G1 and G2, and laser beams having wavelengths λ1Wλ8 are emitted from light faces E1WE8. Since it is necessary to stabilize the wavelength of each laser with a high accuracy, diffraction gratings are formed in waveguides C1WC8, and each laser beam having the wavelength determined by the diffraction grating is selected and is emitted from the light emitting face.
COPYRIGHT: (C)1986,JPO&Japio，下面是Optical recording and reproducing device专利的具体信息内容。
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