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Quasi-phase-matched second harmonic generation device in Mg-doped LiNbO3 and its application to high-density optical disk system

  • Photonic Materials And Nonlinear Optical Materials
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Abstract

The resistance to photorefractive damage is investigated for several nonlinear crystals. A quasi-phase-matched (QPM) second harmonic generation (SHG) waveguide device is fabricated in 5 mol% Mg-doped LiNbO3 which has high resistance to optical damage. The SHG blue laser of the QPM-SHG waveguide device and a tunable distributed Bragg reflector (DBR) laser diode is demonstrated, wherein output stability of continuous blue light is measured. The SHG blue laser, using the QPM-SHG waveguide device with broadened flat matching response, shows good modulation characteristics. The pulsed peak power of 23 mW with rectangular modulated waveform is generated. The SHG blue laser is installed to an optical head, and good recording and readout characteristics are demonstrated. Moreover, butt-coupled SHG blue laser is examined to gain a miniature module with volume of 0·8 cc.

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Authors and Affiliations

  1. Optical Disk Systems Development Centre, Matsushita Electric Industrial Co. Ltd., 3-1-1, Yagumo-nakamachi, 570-8501, Moriguchi, Osaka, Japan

    Y Kitaoka, K Mizuuchi, T Yokoyama, K Yamamoto, K Narumi & M Kato

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  1. Y Kitaoka
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  2. K Mizuuchi
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  3. T Yokoyama
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  4. K Yamamoto
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  5. K Narumi
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  6. M Kato
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Kitaoka, Y., Mizuuchi, K., Yokoyama, T. et al. Quasi-phase-matched second harmonic generation device in Mg-doped LiNbO3 and its application to high-density optical disk system. Bull Mater Sci 22, 405–411 (1999). https://doi.org/10.1007/BF02749949

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  • DOI: https://doi.org/10.1007/BF02749949

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