Thorlabs S405C - 热敏功率探头
产品特点
高分辨率：1 μW或5 μW
S401C和S405C具有监测探头温度的热敏电阻
S401C：背景补偿，实现低漂移测量
S405C：接受高达1.5 kW/cm²的平均功率密度
Thorlabs提供两种宽带热敏功率探头，能够以高分辨率测量低光功率光源。两种热敏探头的宽带镀膜在较宽的波长范围内具有平坦的光谱响应，如图G1.2所示。Ø10 mm的孔径便于对准和测量大光斑尺寸的激光光源。为了方便集成到Thorlabs的透镜套管系统和SM1(1.035"-40)光纤转接件(下方提供)，两种探头都包含SM1外螺纹转接件。
S401C利用有源热背景补偿来实现低漂移功率测量。它通过使用两个传感器电路实现，以从两个方向测量光吸收器与散热器之间的热流。然后，将两个传感器电路的测量结果相减，最大程度地减少热漂移对激光功率测量的影响。(有关外部热干扰影响热敏功率探头读数的信息，请看工作标签)。S401C使用的宽带镀膜在0.19和20 µm之间的波长具有高吸收率(如图G1.2所示)，因此非常适合对准并测量中红外量子级联激光器(QCL)。附带的SM05(0.535"-40)内螺纹光罩在图G1.1中有所体现。
S405C具有SM05(0.535"-40)内螺纹，直接兼容SM05透镜套管，还可以直接连接到Thorlabs的30 mm笼式系统。
| Item #a | S401C | S405C |
|---|---|---|
| Sensor Image (Click the Image to Enlarge) |  |  |
| Wavelength Range | 190 nm - 20 µm | 190 nm - 20 µm |
| Optical Power Range | 10 µW - 1 W (3 Wb) | 100 µW - 5 W |
| Input Aperture Size | Ø10 mm | Ø10 mm |
| Active Detector Area | 10 mm x 10 mm | 10 mm x 10 mm |
| Max Optical Power Density | 500 W/cm² (Avg.) | 1.5 kW/cm² (Avg.) |
| Detector Type | Thermal Surface Absorber (Thermopile) with Background Compensation | Thermal Surface Absorber (Thermopile) |
| Linearity | ±0.5% | ±0.5% |
| Resolutionc | 1 µW | 5 µW |
| Measurement Uncertaintyd | ±3% @ 1064 nm ±5% @ 190 nm - 10.6 µm | ±3% @ 1064 nm ±5% @ 250 nm - 17 µm |
| Response Timee | 1.1 s | 1.1 s |
| Cooling | Convection (Passive) | |
| Housing Dimensions (Without Adapter) | (1.30" x 1.69" x 0.59") | 40.6 mm x 40.6 mm x 16.0 mm (1.60" x 1.60" x 0.63") |
| Temperature Sensor (In Sensor Head) | NTC Thermistor | NTC Thermistor |
| Cable Length | 1.5 m | |
| Post Mounting | Universal 8-32 / M4 Taps (Post Not Included) | Universal 8-32 / M4 Taps (Post Not Included) |
| 30 mm Cage Mounting | - | Two 4-40 Tapped Holes & Two Ø6 mm Through Holes |
| Aperture Threads | Internal SM05 | Internal SM05 |
| Accessories | Internally SM1-Threaded Adapter with an Internally SM05-Threaded Light Shield | Adapter with External SM05 and External SM1 Threads |
| Compatible Consoles | PM400, PM100D, PM100A, and PM5020 | |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM102, PM102A, PM102U, and PM100USB | |