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Updated: Jan 17, 2026

10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
12.0K
まとめ
新規エルビウム添加タンタル酸塩化物(Er3+:Ta2O5)導波路増幅器を開発しました。このデバイスは、高利得と高出力を実証し、集積フォトニックシステムでの応用が期待されます。
科学分野:
- フォトニクスおよび光学工学
- 材料科学
- 集積光学
背景:
- エルビウム添加材料は光増幅器に不可欠です。
- タンタル酸塩化物(Ta2O5)は光利得のための有望なホストを提供しますが、製造上の課題が存在します。
- 大モード面積(LMA)導波路は、高出力集積デバイスに必要です。
研究 の 目的:
- 高性能Er3+:Ta2O5 LMA導波路増幅器の作製と特性評価。
- Er3+:Ta2O5材料に関連する製造上の課題の克服。
- コンパクト、高出力、低ノイズのオンチップ光増幅のためのこの増幅器の可能性の実証。
主な方法:
- 直接エッチングによるEr3+:Ta2O5導波路増幅器の作製。
- 伝搬損失を低減するためのアニーリングプロセス。
- 利得、出力電力、雑音指数の測定を含む光特性評価。
主要な成果:
- 強力な光閉じ込めと高いポンプ信号オーバーラップ(>98.6%)を達成しました。
- Cバンド全体で高いオンチップ信号増強(最大38.1 dB)と正味利得(最大9.6 dB)を実証しました。
- 最大出力電力2.4 mW、最小雑音指数5.68 dBで、安定した高出力動作を確認しました。
結論:
- 開発されたEr3+:Ta2O5 LMA導波路増幅器は、製造上の課題を克服し、増幅の可能性を検証します。
- このデバイスは、優れた大信号増幅性能を示します。
- この技術は、集積フォトニックシステムにおけるコンパクト、高出力、低ノイズのオンチップ光増幅に大きな可能性を秘めています。
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