マイクロハイパワー偏光ビームスプリッターキューブ
The polarizing beam splitter cube is designed with precision for high-power lasers that split the incoming light into transmitted (P-light) and reflected light (S-light), depending on the state of polarization. This element plays a very important role in high-energy laser path control, power monitoring, optical modulation, and interferometry.
特徴
- High power tolerance: Laser damage threshold ≥10 J/cm²@10ns
- 高い偏光コントラスト：P光透過率>98%、S光反射率>99.5%
- High optical accuracy: Surface flatness λ/[email protected] nm parallelism ≤3″
- Stable structure: Cube bonding structure, optical path without offset, stable
- 多波長オプション：532nm、633nm、780nm、808nm、1064nm、1550nm
シェアする
Hobbite offers a wide range of polarizing beam splitter cubes for various applications, such as laser processing, spectroscopic instruments, scientific research experiments, and communication modules with excellent polarization separation performance, thermal stability, and mechanical reliability by using high-precision optical substrates and low-absorption dielectric film systems.
動作原理と構造
について PBS cube consists of two right-angled prisms plated with a multi-layer dielectric polarized spectroscopic film on the glued interface. When light is at perpendicular incidence:
- P-polarized light transmits almost completely.
- S-polarized light is reflected 90°.
This principle, based on polarization-selective reflection, enables efficient light spectroscopy and energy distribution. IBS layers can maintain low absorption and high stability at high power conditions. The cube structure can effectively avoid the optical axis offset and ensure the stability of the system during long-term operation.
素材と製造
- ベース素材： 溶融シリカ / BK7 / CaF₂
- コーティング方法： Ion beam sputtering (IBS) or electron beam evaporation
- 平坦さ： λ/10 @ 632.8nm
- 平行主義： ≤3″
- 有効口径： ≥90%
- Size range: 5mm–50mm, can be customized
カスタマイズ・オプション
- 波長のカスタマイズ： Supports 355nm–1550nm range
- Size can be customized: From 5mm to 50mm on the side
- 構造形式： Cube, planar, or wedge-shaped polarized beamsplitter
- Material used: 溶融シリカ、BK7、CaF₂、ZnSeなど.
- Coating Solution: 単一波長またはマルチバンド偏光フィルム
- 機械的互換性： Optional frame, threaded or flush mounting interface
アプリケーション
- High-power laser processing system
- Laser resonator cavity and power monitoring module
- 光通信偏波制御装置
- Spectroscopic and interferometric systems
- Polarization spectroscopy module for scientific research and experiments
設計上の考慮事項
- 波長を合わせる： The coating should correspond strictly to the operating wavelength of the system
- Angle of Incidence Control: Usually 0°; deviations may affect spectroscopic performance
- 偏光依存性： Polarization-sensitive systems need an explicit choice of the polarizing beam splitter cube type
- コーティングの耐久性： IBS coatings are recommended for high-power applications
- 熱安定性： The material requires a low coefficient of thermal expansion
- Surface Cleanliness: Scattering and absorption damage due to contaminants or scratches
標準パラメータ
項目 | パラメータ範囲／標準値 |
動作波長 | 532nm/633nm/780nm/808nm/1064nm/1550nm |
偏光分離 | P 光線透過率 >98%、S 光線反射率 >99.5% |
入射角 | 0° (vertical incidence) |
素材 | 溶融シリカ / BK7 / CaF₂ |
コーティング・タイプ | 誘電体多層偏光フィルム |
有効口径 | ≥90% |
厚さ範囲 | 3mm–20mm |
品質検査と試験
- Optical surface shape inspection: Interferometer measurement with an accuracy of λ/20
- 並列性の検出： Angle interferometer or autocollimator measurement
- コーティングの均一性検査： Spectrophotometer measurement, uniformity of film thickness ≤ ±0.5%
- レーザーダメージしきい値テスト： ISO 21254, 10ns pulse, 1064nm
- 表面品質検査：20-10 scratch/dent grade per MIL-PRF-13830B
All the PBS cubes pass interference-level surface shape detection and ISO laser damage testing to ensure a long-term stable operation with high reliability in high-power laser systems.
