講演情報
[10a-PA2-7]Aligning coherent beams with high angular precision: A new method for pointing adjustment and control
〇コスロービアン ハイク1,2、谷口 誠治1,2、藤田 雅之1,2、中田 芳樹2、宮永 憲明1,2,3 (1.レーザー総研、2.阪大、3.パワーレーザー)
キーワード：
コヒーレントビーム結合、ビームアライメント
In many advanced applications, aligning multiple laser beams within a restricted area with ultra-high angular precision (~ micro-rad) is challenging. In this presentation, we will discuss the efficiency degradation of coherent beam combining (CBC) caused by multiple-beam alignment mismatch (centering and pointing). A new method for pointing adjustment and control in CBC will be presented, quantitatively elucidated, and demonstrated experimentally. It is estimated that an accuracy of up to 1/50th of the diffraction-limited divergence (DLD) angle can be achieved.