GaN系405nm半導体レーザーを用いた近接場光記録再生 Near-Field Optical Recording/Readout Using a 405nm Wavelength GaN Laser Diode

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Near-field recording/readout using a solid immersion lens (SIL) is capable of achieving a numerical aperture (NA) of greater than unity and a higher storage density than conventional optical disc systems. In near-field recording using a SIL, a material having a higher refractive index results in a smaller spot size, as does using a shorter wavelength light source. However, the conventionally used GaN 405-nm laser diode (LD) still has several advantages over shorter wavelength light sources; for example, it can achieve a higher recording density and it is possible to produce more reliable near-field recording/readout systems based on it. We describe a trial that seeks to achieve a higher data transfer rate using a 1.84-NA dual-channel near-field recording/readout system that employs a monolithic dual-beam blue LD.

収録刊行物

  • レーザー研究  

    レーザー研究 35(2), 86-90, 2007-02-15 

    The Laser Society of Japan

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各種コード

  • NII論文ID(NAID)
    10018544504
  • NII書誌ID(NCID)
    AN00255326
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    03870200
  • NDL 記事登録ID
    8712109
  • NDL 雑誌分類
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL 請求記号
    Z16-1040
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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