High power and good beam quality of two-dimensional VCSEL array with integrated GaAs microlens array

Zhenfu Wang, Yongqiang Ning, Yan Zhang, Jingjing Shi, Xing Zhang, Lisen Zhang, Wei Wang, Di Liu, Yongsheng Hu, Haibing Cong, Li Qin, Yun Liu, Lijun Wang

    Research output: Contribution to journalArticlepeer-review

    34 Scopus citations

    Abstract

    High power and good beam quality of two-dimensional bottom-emitting vertical-cavity surface-emitting laser array with GaAs microlens on the substrate is achieved. Uniform and matched convex microlens is directly fabricated by one-step diffusion-limited wet-etching techniques on the emitting windows. The maximum output power is above 1W at continuous-wave operation at room temperature, and the far-field beam divergence is below 6.6°at a current of 4A. These properties between microlens-integrated and conventional device at different operating current are demonstrated.

    Original languageEnglish
    Pages (from-to)23900-23905
    Number of pages6
    JournalOptics Express
    Volume18
    Issue number23
    DOIs
    StatePublished - Nov 8 2010

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