波長可変フィルタ
SuperK SELECTをSuperKレーザに接続すると、専用制御ソフトウェアが自動的に認識し、初期化を行います。
SuperK SELECTには内蔵RFスイッチが搭載されており、物理的なケーブルの差し替えを行うことなく、2つのAOTFを切り替えることができます。
また、クリーンアップフィルタなどの1インチ光学素子を装着できる着脱式の外部フィルタホルダが付属しており、光学系の設計に最大限の柔軟性を提供します。
SuperK SELECTは、結晶帯域幅全体にわたる高速な波長掃引を可能にします。この内蔵機能は専用制御ソフトウェアから有効化でき、トリガ同期による波長出力および出力レベルの高速制御を実現します。
SuperK SELECTには、波長選択や掃引、および関連する動作用のカスタムルーチンを作成するためのスクリプトツールも含まれています。
波長掃引 (波長インタロゲーション)は、幅広い用途において重要です。SuperKシリーズのスーパーコンティニューム光源とSuperK SELECTを組み合わせることで、これを容易に実現できます。波長掃引の重要な特長は、50 μs未満の時間スケールで波長または振幅を切り替えられる点にあります。
1つのプロファイル内で最大8チャネルを同時に有効化でき、非常に高速なカラーインタロゲーションや切替が可能です。8波長を超えるスキャンが必要な場合は、専用制御ソフトウェアを使用して複数のプロファイル (1プロファイルにつき最大8波長)を有効化することで対応できます。この場合、プロファイル間の切り替えにはより長い時間を要します。
さらに、高速波長切り替え機能を使用することで、信号の高周波振幅変調を行うことも可能で、これにより、例えば機械式チョッパなどの代わりとして効果的に利用できます。この手法により、ビームチョッパ使用時に必要となる自由空間ビームの取り扱いを回避しながら、はるかに高い変調周波数を実現できます。
SuperK SELECTは、高性能なSuperK LINKファイバデリバリシステムと組み合わせることができ、広帯域ファイバに加え、FC/PCコネクタや可視域・近赤外域用のアクロマティックコリメータなど、各種終端オプションに対応しています。SuperK FDSおよびLINKを用いてファイバ接続を行うことで、再アライメント不要で着脱可能な、安定かつ高効率なファイバ接続を実現します。
SuperK SELECTは、必要な波長範囲に応じて、異なる結晶を用いたAOTFを選択可能です。400 nm ~ 2000 nmの波長域をカバーする4種類のAOTFが用意されています。
| AOTF1/AOTF2 | VIS-NIR 500 nm ~ 900 nm |
NIR 640 nm ~ 1100 nm |
IR 1100 nm ~ 2000 nm |
|---|---|---|---|
| VIS 400 nm ~ 650 nm |
400 nm ~ 650 nm / 690 nm ~ 900 nm |
400 nm ~ 650 nm / 690 nm ~ 1100 nm |
400 nm ~ 650 nm / 1100 nm ~ 2000 nm |
VIS-nIR 500 nm ~ 900 nm |
– | 500 nm ~ 900 nm / 1100 nm ~ 2000 nm |
|
| nIR 640 nm ~ 1100 nm |
– | 640 nm ~ 1100 nm / 1200 nm ~ 2000 nm |
|
| 波長可変チャンネル数 | AOTFあたり1 〜 8 |
|---|---|
| フィルタ帯域幅 (可視光)*1 | 1.8 nm ~ 8.5 nm |
| フィルタ帯域幅 (可視 〜 近赤外) | 3.5 nm ~ 14 nm |
| フィルタ帯域幅 (近赤外)*1 | 1.8 nm ~ 5 nm |
| フィルタ帯域幅 (赤外)*1 | 6.4 nm ~ 19.8 nm |
| AOTF回折効率 | > 90 % (1 ~ 8チャネル動作時) |
| 偏光*2 | 直線偏光 |
| 出力モード | ファイバ出力 または コリメート出力 |
| 高速波長切替 | < 50 μs |
*1 コリメート自由空間出力、FWHM帯域幅。
*2 ベースに対して水平。
| 動作温度 | +15 ℃ ~ +30 ℃ |
|---|---|
| 保存温度 | +5 ℃ ~ +50 ℃ |
| 湿度 (結露なきこと) | 20 %RH ~ 80 %RH |
| 質量 | ≈ 4 kg |
| メカニカルシャッタ | 両ポートに統合 |
|---|---|
| レーザ安全インターロック | 内蔵 |
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