Abstract: This paper describes semiconductor laser arrays placed in an external Talbot cavity. The external Talbot cavity couples the light between many adjacent lasers such that all lasers operate at the same frequency and phase, resulting in a high power diffraction limited output beam. We designed a compact cavity which is comprised of a 30 by 50 element monolithic 2-D laser array, a GaP mass transport lens array, a liquid crystal array, a phase sensing and control system and a waveguide. Initial results obtained from a 20 element linear Talbot cavity which a calculated mode discrimination similar to the 2-D cavity demonstrate in excess of 30 mW cw per laser element in a diffraction limited far field. In addition we have also demonstrated 50 Watt CW incoherent output power from a monolithic 2-D laser array.!17
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机译：摘要：本文描述了放置在外部Talbot腔中的半导体激光器阵列。外部Talbot腔将光耦合到许多相邻激光器之间，从而使所有激光器都以相同的频率和相位工作，从而导致高功率衍射受限的输出光束。我们设计了一个紧凑的腔体，该腔体由30 x 50的单片二维激光阵列，GaP质量传输透镜阵列，液晶阵列，相位感应和控制系统以及波导组成。从20个元素的线性Talbot腔获得的初步结果表明，在有限的衍射远场中，每个激光元件的计算模式辨别力与2-D腔相似，超过了20 mW cw。此外，我们还展示了来自单片二维激光阵列的50瓦连续波不相干输出功率！17
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