Recording/reproducing device, recording/reproducing method and information recording medium
    5.
    发明专利
    Recording/reproducing device, recording/reproducing method and information recording medium 有权
    记录/再现设备,记录/再现方法和信息记录介质

    公开(公告)号:JP2013218781A

    公开(公告)日:2013-10-24

    申请号:JP2013131744

    申请日:2013-06-24

    摘要: PROBLEM TO BE SOLVED: To realize stable recording and reproducing in/from an information recording medium by utilizing an absorption edge shift phenomenon.SOLUTION: An optical information recording/reproducing device 100 comprises: a light source 20 for emitting a laser beam; a lens 6 for condensing the laser beam on an information recording medium 21; and a photodetector 19 for detecting reflection light from the information recording medium 21. A recording layer of the information recording medium 21 contains a material in which an absorption ratio of the laser beam is increased by an absorption edge of an optical absorption spectrum being moved to a longer wavelength due to band-to-band transition of electrons as a temperature is increased. The optical information recording/reproducing device 100 further comprises: a wavelength detection section 26 for detecting at least one of a wavelength of the laser beam and wavelength variations; a temperature detection section 27 for detecting at least one of a temperature of the information recording medium 21 or around the information recording medium 21 and temperature variations; and a control section 28 for controlling power of the light source 20 on the basis of respective outputs of the wavelength detection section 26 and the temperature detection section 27.

    摘要翻译: 要解决的问题:通过利用吸收边缘移位现象来实现信息记录介质的稳定的记录和再现。解决方案:光信息记录/再现装置100包括:用于发射激光束的光源20; 用于将激光束聚光在信息记录介质21上的透镜6; 以及用于检测来自信息记录介质21的反射光的光检测器19.信息记录介质21的记录层包含一种材料,其中激光束的吸收比被吸收光谱的吸收边缘移动到 随着温度的升高,由于电子的带 - 带转变而导致的较长的波长。 光信息记录/再现装置100还包括:用于检测激光束的波长和波长变化中的至少一个的波长检测部分26; 温度检测部分27,用于检测信息记录介质21的温度或信息记录介质21周围和温度变化中的至少一个; 以及控制部分28,用于根据波长检测部分26和温度检测部分27的各个输出来控制光源20的电力。