Nd:YVO4における熱レンズ効果の実験的および数学的分析
Optics express
|February 20, 2026
まとめ
ネオジム・ドーピングされたイトリウム・オルトヴァナダート (Nd:YVO4) レーザー増幅器の波長歪みを研究した. 量子欠陥が主要な熱源であり,高出力では有意な熱レンズと偏差を引き起こした.
科学分野:
- レーザー物理学 レーザー物理学
- 光学工学は,光学工学である.
- マテリアルサイエンス 材料科学
背景:
- ネオジム・ドーピングされたイトリウム・オルトバナドート (Nd:YVO4) レーザーは,様々な用途で広く使用されています.
- 熱効果を理解することは,レーザーの性能と安定性を最適化するために不可欠です.
- 電源に依存する波長の歪みは,増幅器の効率とビーム品質を制限する可能性があります.
研究 の 目的:
- Nd:YVO4レーザー増幅器の電源に依存する波長の歪みを分析するために.
- 熱効果に寄与する支配的な熱源を特定する.
- 熱レンズによって誘発される偏差を特徴付けるために.
主な方法:
- 976 nmの探査ビームを用いた実験分析.
- 分割段階のフーリエ伝播による数値熱光学モデリング.
- 878.6 nmでのポンプの調査とその熱的貢献.
主要な成果:
- 実験結果は,数値モデルと優れた一致を示した.
- 量子欠陥が支配的な熱源 (99%) として特定されました.
- 14ダイオプターの熱レンズが43Wの出力 (46%の効率) で観察されました.
- 失焦,アスティグマティズム,球形偏差は,熱レンズの主要な構成要素でした.
結論:
- 量子欠陥は,Nd:YVO4増幅器における熱レンズ化の主要な原動力である.
- 波長の歪み,特に偏差は,レーザーの性能に大きな影響を与えます.
- 精密な熱光学モデリングは,高電力レーザーの熱効果を予測し軽減するために不可欠です.
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