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经销商厂商性质
深圳市所在地
| 对比 | 型号 | 光谱范围 | 可测量功率1 | 最小可测量功率2 |
 | 918D-IG-OD1R InGaAs 探测器，800-1650 nm，OD1 衰减器，DB15 | 800 - 1650 nm | 100 mW | 20 pW |
 | 918D-IG-OD2R InGaAs 探测器，800-1650 nm，OD2 衰减器，DB15 | 800 - 1650 nm | 1000 mW | 20 pW |
 | 918D-IG-OD3R InGaAs 探测器，800-1650 nm，OD3 衰减器，DB15 | 800 - 1650 nm | 2000 mW | 20 pW |
 | 918D-IR-OD1R 锗探测器，780-1800 nm，OD1 衰减器，DB15 | 780 - 1800 nm | 100 mW | 5 nW |
 | 918D-IR-OD2R 锗探测器，780-1800 nm，OD2 衰减器，DB15 | 780 - 1800 nm | 1000 mW | 5 nW |
 | 918D-IR-OD3R 锗探测器，780-1800 nm，OD3 衰减器，DB15 | 780 - 1800 nm | 2000 mW | 5 nW |
 | 918D-SL-OD1R 硅探测器，400-1100 nm，OD1 衰减器，DB15 连接器 | 400 - 1100 nm | 40 mW | 20 pW |
 | 918D-SL-OD2R 硅探测器，400-1100 nm，OD2 衰减器，DB15 | 400 - 1100 nm | 400 mW | 20 pW |
 | 918D-SL-OD3R 硅探测器，400-1100 nm，OD3 衰减器，DB15 | 400 - 1100 nm | 2000 mW | 20 pW |
 | 918D-UV-OD3R 紫外硅探测器，200-1100 nm，OD3 衰减器，DB15 | 200 - 1100 nm | 200 mW | 20 pW |
产品规格
| 型号 |  |  |  |  |
| 918D-SL-OD3R | 918D-IG-OD3R | 918D-IR-OD3R | 918D-UV-OD3R | |
| 探测器类型 | Post Mounted | Post Mounted | Post Mounted | Post Mounted |
| 探测器输入 | Free Space | Free Space | Free Space | Free Space |
| 探测器材料 | Silicon | Indium Gallium Arsenide | Germanium | UV Enhanced Silicon |
| 光谱范围 | 400 - 1100 nm | 800 - 1650 nm | 780 - 1800 nm | 200 - 1100 nm |
| 通光孔径 | 10.3 mm | 10.3 mm | 10.3 mm | 10.3 mm |
| 感光尺寸 | Ø11.3 mm | Ø3 mm | Ø3 mm | Ø11.3 mm |
| 衰减器 1 | OD3, Built-in | OD3, Built-in | OD3, Built-in | OD3, Built-in |
| 可测量功率 | 2000 mW | 2000 mW | 2000 mW | 200 mW |
| 功率密度 | 30 W/cm2 | 30 W/cm2 | 30 W/cm2 | 30 W/cm2 |
| 功率密度（无衰减器） | 3 W/cm2 | 3 W/cm2 | 3 W/cm2 | 0.2 W/cm2 |
| 有衰减器时的脉冲能量 | 5 uJ | 5 uJ | 5 uJ | 500 nJ |
| 脉冲能量（无衰减器） | 5 nJ | 5 nJ | 5 nJ | 0.5 nJ |
| 线性度 | ±0.5 % | ±0.5 % | ±0.5 % | ±0.5 % |
| 均匀性 | ±2 % | ±2 % @ 1550 nm | ±2 % | ±2 % |
| 上升时间 | ≤2 µs | ≤2 µs | ≤2 µs | ≤5.9 µs |
| Calibration Module | DB15 Connector Pigtail | DB15 Connector Pigtail | DB15 Connector Pigtail | DB15 Connector Pigtail |
| 校准不确定度（无衰减器） | ±1% @ 400-940 nm ±4% @ 941-1100 nm | ±2% @ 800-900 nm ±2% @ 901-1650 nm | ±2% @ 780-910 nm ±2% @ 911-1700 nm 4%@1701-1800 nm | ±4% @ 200-219 nm ±2% @ 220-349 nm 1% @ 350-949 nm 4% @ 950-1100 nm |
| 端口类型 | DB15 | DB15 | DB15 | DB15 |
| 工作温度范围 | 5 to 50°C | 5 to 50°C | 5 to 50°C | 5 to 50°C |
| 工作湿度 | <70% RH | <70% RH | <70% RH | <70% RH |
| RoHS | Compliant | Compliant | Compliant | Compliant |
| 校准不确定度（带衰减器） | ±1% @ 400-940 nm ±4% @ 941-1100nm | ±5% @ 800-900 nm ±2% @ 901-1650 nm | ±5% @ 780-910 nm ±2% @ 911-1700 nm 4% @ 1701-1800 nm | ±8% @ 200-219 nm ±2% @ 220-349 nm 1% @ 350-949 nm 4% @ 950-1100 nm |
| 可测量功率（无衰减器） | 4 mW (1830-R, 1918-R and 1936-R), 2.5 mW (843-R, 1919-R, and 841-PE-USB) | 10 mW (1830-R, 1918-R, 1936-R/2936-R), 1.3 mW (843-R, 1919-R, 841-PE-USB) | 10 mW (1830-R, 1918-R, 1936-R/2936-R), 1.3 mW (843-R, 1919-R, 841-PE-USB) | 0.3 mW (200 - 400 nm) 0.1 mW (400 - 600 nm, >1050 nm) 0.07 mW (600 - 1050 nm) |
| 最小可测量功率 | 20 pW | 20 pW | 5 nW | 20 pW |
| 电缆长度 | 2 m | 2 m | 2 m | 2 m |
注释:
Versions with OD1 and OD2 attenuators are also available.
特征
| Excellent Photodiode Linearity | Responsivity Variation over Temperature | |
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| 全不锈钢结构 | 全不锈钢结构 | |
| These photodiodes show excellent linearity over a large dynamic range. This is ideal for use in applications that require high accuracy measurements down to the pW level, especially when combined with a high sensitivity power meter that can accommodate the large dynamic range of the optical signal. | A natural characteristic of a photodiode is for the its optical response to change as the temperature changes near the bandgap of semiconductor materials. Newport’s 918D series sensors feature a thermocouple near the photodiode, which allows certain Newport meters to read the temperature and automatically adjust the responsivity, ensuring the most accurate measurements. | |
| Factors that Affect Maximum Measurable Power | ||
| The maximum measurable power of photodiode sensors is dependent on several factors such as the wavelength of incoming light, photodiode current output saturation, temperature, use of an attenuator and a power meter's maximum current input value. Newport provides maximum power specifications based on the power meter models, with and without an attenuator, and wavelength-dependent maximum power level. With these factors affecting measurable power in mind, choosing the proper detector for your application is critical | ||
| 增强功能 918D 系列光电二极管探头通过*功能提升性能，旨在使其优于 Newport 经过业内验证的 818 系列校准光电二极管探头。它们具有集成的校准数据存储器、内置 OD1、OD2 或 OD3 衰减片（带有电子衰减片开/关传感器）以及用于温度漂移补偿的传感电子器件（可使探测器在温度变化时测量更为准确）。 |  | |
 | 宽动态范围（具有内置衰减器） 的 OD3 衰减技术将我们探测器的校准光学动态范围扩展了三个数量级。我们的衰减器设计提供高损伤阈值和光谱平坦度。通过与 Newport 正在使用的光电二极管相关联的低 NEP，实现了更宽的动态范围。对于小于 1 mW 的输入功率，我们建议将衰减器置于 OFF 位置（对于 918D-UV-OD3R 在 200 - 400 nm 之间则为 0.1 mW），使信噪比达到。该衰减器的通光孔径为 10.3mm。 | |
| 的校准不确定性 918D 系列包括一个采用 NIST 可追溯标准，利用 Newport 光学探头校准设施维护的高精度设备完成的全光谱响应校准。严格的校准设备和过程控制可实现业内的校准不确定性。每个探头都附有校准数据，这些数据以电子形式存储在探测器的 EEPROM 中。每个探头都附有校准证书以及衰减器模式和无衰减器模式下的实际校准曲线和数据。为了保持精度、保证性能，Newport 建议每年对光电二极管探头进行校准。 |  | |
| Detector calibration system block diagram. | ||
 | Internal Temperature Sensor The internal temperature sensor on the detector head is used to compensate the responsivity drift caused by the temperature change in the photodiode. The responsivity change is most sensitive around the bandgap, or towards the longer wavelength limit. The power meter calculates the temperature and automatically updates the responsivity value so that the measurements remain accurate. This feature is enabled with the power meter models 1936-R, 2936-R, 1919-R, and 841-PE-USB. | |
| Photodiode Sensor Physics | ||
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| 全不锈钢结构 | ||
| Adapters for Fiber-Optic Applications | ||
| These photodiode sensors can be converted to measure optical power from connectorized or bare optical fibers. Newport offers a comprehensive set of screw-in fiber-optic adapters to match a variety of connector types. Our bare fiber holder and adapter mountare designed together to hold 250-µm bare fibers without damaging the fiber. | ||
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| 全不锈钢结构 | | 全不锈钢结构 |
