Development of High-Efficiency UV Laser Generated by SHG Technique with Primary Visible Fiber Laser

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  • 青色LD励起可視光ファイバレーザーを用いた 高効率UVレーザー光源の開発
  • アオイロ LD レイキ カシコウ ファイバレーザー オ モチイタ コウコウリツ UV レーザー コウゲン ノ カイハツ

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We are developing a compact, high-efficiency continuous-wave UV (CW-UV) laser system whose concept is that the CW-UV laser source is only generated by a second harmonic generation (SHG) technique with a visible fiber laser excited by blue laser diodes (primary visible fiber laser) as a fundamental laser beam. We used a Pr-doped double-clad structured single-mode waterproof fluoroaluminate glass fiber as the laser medium of the primary visible fiber laser. Such a CW-UV laser source is expected to have higher conversion efficiency than previous CW-UV laser systems because they use a third harmonic generation (THG) or fourth harmonic generation (FHG) technique with a doubleconversion process. We are aiming to develop 2-W CW-UV laser systems at 260 and 320 nm in this project.

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