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| 对比 | 型号 | 探测器类型 | 光谱范围 | 可测量功率 | 感光尺寸 | 功率密度 |
 | 919P-003-10 | High Sensitivity | 0.19 to 11 µm | 3 W | Ø9.5 mm | 1 kW/cm² |
 | 919P-010-16 | General Purpose | 0.19 to 11 µm | 10 W | Ø16 mm | 28 kW/cm² |
 | 919P-020-12 | General Purpose | 0.19 to 11 µm | 4 W standalone (20 W with a heat sink) | Ø12 mm | 23 kW/cm² |
 | 919P-030-18 | General Purpose | 0.19 to 11 µm | 30 W | Ø17.5 mm | 20 kW/cm² |
 | 919P-040-50 | General Purpose | 0.19 to 11 µm | 35 W | Ø50 mm | 12 kW/cm² |
 | 919P-050-18HP | High Energy Pulse | 0.24 to 2.2 µm | 50 W | Ø17.5 mm | 0.5 kW/cm² |
 | 919P-050-26 | General Purpose | 0.19 to 11 µm | 50 W | Ø26 mm | 12 kW/cm² |
 | 919P-150-26 | Fan Cooled | 0.19 to 11 µm | 150 W | Ø26 mm | 12 kW/cm² |
 | 919P-250-35 | Fan Cooled | 0.19 to 11 µm | 250 W | Ø35 mm | 10 kW/cm² |
 | 919P-5KW-50 | High Power | 0.19 to 11 µm | 5000 W | Ø50 mm | 3 kW/cm² |
 | 919P-600-65 | High Power | 0.19 to 11 µm | 600 W | Ø65 mm | 7 kW/cm² |
产品规格
| 型号 |  |  |  |  |
| 919P-003-10 | 919P-040-50 | 919P-5KW-50 | 919P-050-18HP | |
| 探测器类型 | High Sensitivity | General Purpose | High Power | High Energy Pulse |
| 光谱范围 | 0.19 to 11 µm | 0.19 to 11 µm | 0.19 to 11 µm | 0.24 to 2.2 µm |
| 感光尺寸 | Ø9.5 mm | Ø50 mm | Ø50 mm | Ø17.5 mm |
| 可测量功率 | 3 W | 35 W | 5000 W | 50 W |
| 能量密度 | <100 ns, 0.3 J/cm2 0.5 ms, 1 J/cm2 2 ms, 2 J/cm2 10 ms, 4 J/cm2 | <100 ns, 0.3 J/cm2 0.5 ms, 5 J/cm2 2 ms, 10 J/cm2 10 ms, 30 J/cm2 | <100 ns, 0.3 J/cm2 0.5 ms, 5 J/cm2 2 ms, 10 J/cm2 10 ms, 30 J/cm2 | <100 ns, 4 J/cm2 0.5 ms, 15 J/cm2 2 ms, 25 J/cm2 10 ms, 50 J/cm2 |
| 功率密度 | 1 kW/cm² | 12 kW/cm² | 3 kW/cm² | 0.5 kW/cm² |
| 线性度 | ±1.5 % | ±1 % | ±2 % | ±1.5 % |
| 上升时间 | 1.8 s | 2.5 s | 3.0 s | 2 s |
| 校准不确定度 | ±3 % | ±3 % | ±5 % | ±5 % |
| 端口类型 | DB15 | DB15 | DB15 | DB15 |
| 工作温度范围 | 15°C to 35°C, <70% RH, non-condensing | 15°C to 35°C, <70% RH, non-condensing | 15°C to 35°C, <70% RH, non-condensing | 15°C to 35°C, <70% RH, non-condensing |
| 功率范围 | 40 µW - 3 W | 100 mW - 35 W, 150 W for 2 min | 20 W - 5000 W | 140 mW - 50 W |
| 电缆长度 | 1.5 m | 1.5 m | 1.5 m | 1.5 m |
| RoHS | Compliant | Compliant | Compliant | Compliant |
| 特征 | ||
| 在宽波长范围上的恒定响应 热电堆探头对入射激光束的响应特点由其吸收决定。我们在传感器中使用了两种不同类型的涂层。大多数型号中使用了 BB 型，在整个响应波长范围内具有良好的恒定吸收。919P-050-18HP 模式中使用了 PF 型，专为高能量密度脉冲设计。 |  | |
 | 针对损伤阈值与脉冲宽度进行了广泛测试 919P 系列热电堆探头通过多种激光器对损伤阈值进行了广泛测试。您可以信任我们的规格，安心使用。 | |
| Thermopile Sensor Physics | ||
 | ||
| Thermopile optical power sensors are based on thermocouples. A thermocouple consists of two dissimilar metals connected in series. To detect radiation, one metal junction is typically blackened to absorb the radiation. The temperature rise of this junction with respect to another non-irradiated junction generates a voltage. This effect is the basis of all thermocouple temperature sensors. The thermocouple materials used in thermopiles are usually bismuth and antimony, which have a relatively high thermoelectric coefficient. An individual thermocouple typically produces a low output voltage, which results in a low detectivity and limits its use as a sensing device. So, one way to increase the output voltage is to connect many thermocouple junctions in series. All the “hot” junctions are placed close together to collect the radiation. The typical operation of a thermopile is shown above. The thermopile disc consists of a circular array of thermocouples. The optical radiation is absorbed by the disc generating the output voltage. The heat on the disc spreads radially across the thermopile on the reverse side of the disc where it is transferred to a heat sink. These devices are quite sensitive in the IR due to their broadbａnd absorption. Due to the heating and cooling processes, the response time of a thermopile is quite slow, typically on the order of seconds. Due to this time constraint, thermopiles are used exclusively for measuring the power of CW or quasi-CW radiation sources. Please see our Thermopile Sensor Physics technical note for additional information. | ||
| 大功率测量的理想选择 | NIST 可追溯性 | |
| Newport 新型的 919P 热电堆探头系列提供了一系列探测器，以满足连续或脉冲激光器的功率测量需求。他们提供了宽带、频域平直的响应，测量功率范围高达 5000 W。 | 每个 919P 热电堆探头包括一个 DB15 连接器和内部 EEPROM，用于存储工厂校准数据。大多数探头都在 532 nm、1.064 µm 和 10.64 µm 这三种不同波长下校准。建议每年都对热电堆探头进行校准，以确保 NIST 的可追溯性。 | |
Cross Reference Chart for Legacy 818P Series Thermopile Sensors
Please note that the 919P Series Thermopile Sensors are intended to replace the 818P Series Sensor. Also note that both the series are incompatible with certain optical power meter models. The following table provides the recommended replacement 919P models for each 818P series model. Even though the recommended models have the closest specifications as the obsoleting ones, however, not identical. The user must carefully compare each specification. Legacy 818P Model Replacement 919P Model 818P-001-12, 818P-001-12NIR 919P-003-10 818P-015-19 919P-010-16 818P-010-12, 818P-020-12 919P-020-12 818P-030-19, 818P-015-17W, 818P-030-17W 919P-030-18 818P-040-55, 818P-040-50W, 818P-050-50W 919P-040-50 818P-015-18HP, 818P-030-18HP 919P-050-18HP 818P-040-25, 818P-050-17W 919P-050-26 818P-100-25, 818P-110-19, 818P-150-19 919P-150-26 818P-100-55, 818P-250-25, 818P-300-25 919P-250-35 818P-300-55, 818P-400-55, 818P-500-55 919P-600-65 818P-3KW-65, 818P-3KW-100 919P-5KW-50
Flexible Fiber Adapters
The 919P-SMA and 919P-FC fiber adapter can be used with most of the detector models. Remove the snout for Models 919P-003-10 and 919P-010-16 and directly mount the fiber adapters on the thread. In order to accommodate various aperture sizes, we provide adapter rings as well as the fiber adapters. Refer to the table for the corresponding adapter ring for each detector model. Note that certain models do not accept a fiber adapter. Detector Model Required Mounting Ring 919P-030-18 919P-18FA 919P-040-50 919P-50FA 919P-050-26, 919P-150-26 919P-26FA 919P-250-35 919P-35FA 919P-020-12, 919P-050-18H Fiber adapters not mountable
激光的探测器选择
如果您已拥有 Newport 和 Spectra Physics 激光器，请参阅我们的光学探测器选型指南，来查看每个激光器的推荐探测器型号。
