Focusing Characteristics of a Wide-Striped Laser Diode Integrated with a Microlens

Jun ichi Shimada, Osamu Ohguchi, Renshi Sawada

    研究成果: Contribution to journalArticle査読

    9 被引用数 (Scopus)

    抄録

    We We developed a wide-striped laser diode integrated with a microlens that provides good focusing characteristics through a small focusing spot. We calculated and demonstrated that a 60-μm-wide core and a 1.9-pm-high ridge is the best structure for fundamental index-guiding mode oscillation of a wide-striped laser diode. We integrated a wide-striped laser diode with the developed microlens in the Fresnel diffraction field, and demonstrated that a device with a 60-μm-wide core has a minimum focusing spot width of 2.0 µm in the horizontal direction. Also, we estimated the wavefront in the Fresnel diffraction field from the working distance error of a lens designed for a collimated incident beam, and showed that the working distance error, focusing spot width, and sidelobe can be improved by this estimated wavefront.

    本文言語英語
    ページ(範囲)936-942
    ページ数7
    ジャーナルJournal of Lightwave Technology
    12
    6
    DOI
    出版ステータス出版済み - 6 1994

    All Science Journal Classification (ASJC) codes

    • 原子分子物理学および光学

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