- 在市場(chǎng)上具有最小的校準(zhǔn)不確定性
- 用于熱漂移補(bǔ)償?shù)膬?nèi)部溫度傳感器
- 集成衰減器，可選擇范圍為 10X 到 1000X
- 衰減器開(kāi)/關(guān)傳感器
- 自由空間和光纖測(cè)量
- 符合 RoHS 標(biāo)準(zhǔn)
| 對(duì)比 | 型號(hào) | 光譜范圍 | 可測(cè)量功率1 | 最小可測(cè)量功率2 |
 | 918D-IG-OD1R InGaAs 探測(cè)器，800-1650 nm，OD1 衰減器，DB15 | 800 - 1650 nm | 100 mW | 20 pW |
 | 918D-IG-OD2R InGaAs 探測(cè)器，800-1650 nm，OD2 衰減器，DB15 | 800 - 1650 nm | 1000 mW | 20 pW |
 | 918D-IG-OD3R InGaAs 探測(cè)器，800-1650 nm，OD3 衰減器，DB15 | 800 - 1650 nm | 2000 mW | 20 pW |
 | 918D-IR-OD1R 鍺探測(cè)器，780-1800 nm，OD1 衰減器，DB15 | 780 - 1800 nm | 100 mW | 5 nW |
 | 918D-IR-OD2R 鍺探測(cè)器，780-1800 nm，OD2 衰減器，DB15 | 780 - 1800 nm | 1000 mW | 5 nW |
 | 918D-IR-OD3R 鍺探測(cè)器，780-1800 nm，OD3 衰減器，DB15 | 780 - 1800 nm | 2000 mW | 5 nW |
 | 918D-SL-OD1R 硅探測(cè)器，400-1100 nm，OD1 衰減器，DB15 連接器 | 400 - 1100 nm | 40 mW | 20 pW |
 | 918D-SL-OD2R 硅探測(cè)器，400-1100 nm，OD2 衰減器，DB15 | 400 - 1100 nm | 400 mW | 20 pW |
 | 918D-SL-OD3R 硅探測(cè)器，400-1100 nm，OD3 衰減器，DB15 | 400 - 1100 nm | 2000 mW | 20 pW |
 | 918D-UV-OD3R 紫外硅探測(cè)器，200-1100 nm，OD3 衰減器，DB15 | 200 - 1100 nm | 200 mW | 20 pW |
When used with a 1830-R, 1918-R, 1936-R, or 2936-R benchtop optical power meter.
When used with a 1936-R or 2936-R benchtop optical power meter.
產(chǎn)品規(guī)格
| 型號(hào) |  |  |  |  |
| 918D-SL-OD3R | 918D-IG-OD3R | 918D-IR-OD3R | 918D-UV-OD3R | |
| 探測(cè)器類(lèi)型 | Post Mounted | Post Mounted | Post Mounted | Post Mounted |
| 探測(cè)器輸入 | Free Space | Free Space | Free Space | Free Space |
| 探測(cè)器材料 | Silicon | Indium Gallium Arsenide | Germanium | UV Enhanced Silicon |
| 光譜范圍 | 400 - 1100 nm | 800 - 1650 nm | 780 - 1800 nm | 200 - 1100 nm |
| 通光孔徑 | 10.3 mm | 10.3 mm | 10.3 mm | 10.3 mm |
| 感光尺寸 | ?11.3 mm | ?3 mm | ?3 mm | ?11.3 mm |
| 衰減器 1 | OD3, Built-in | OD3, Built-in | OD3, Built-in | OD3, Built-in |
| 可測(cè)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（無(wú)衰減器） | 3 W/cm2 | 3 W/cm2 | 3 W/cm2 | 0.2 W/cm2 |
| 有衰減器時(shí)的脈沖能量 | 5 uJ | 5 uJ | 5 uJ | 500 nJ |
| 脈沖能量（無(wú)衰減器） | 5 nJ | 5 nJ | 5 nJ | 0.5 nJ |
| 線(xiàn)性度 | ±0.5 % | ±0.5 % | ±0.5 % | ±0.5 % |
| 均勻性 | ±2 % | ±2 % @ 1550 nm | ±2 % | ±2 % |
| 上升時(shí)間 | ≤2 µs | ≤2 µs | ≤2 µs | ≤5.9 µs |
| Calibration Module | DB15 Connector Pigtail | DB15 Connector Pigtail | DB15 Connector Pigtail | DB15 Connector Pigtail |
| 校準(zhǔn)不確定度（無(wú)衰減器） | ±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 |
| 端口類(lèi)型 | DB15 | DB15 | DB15 | DB15 |
| 工作溫度范圍 | 5 to 50°C | 5 to 50°C | 5 to 50°C | 5 to 50°C |
| 工作濕度 | <70% RH | <70% RH | <70% RH | <70% RH |
| RoHS | Compliant | Compliant | Compliant | Compliant |
| 校準(zhǔn)不確定度（帶衰減器） | ±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 |
| 可測(cè)量功率（無(wú)衰減器） | 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) |
| 最小可測(cè)量功率 | 20 pW | 20 pW | 5 nW | 20 pW |
| 電纜長(zhǎng)度 | 2 m | 2 m | 2 m | 2 m |
注釋:
Versions with OD1 and OD2 attenuators are also available.
特征
| Excellent Photodiode Linearity | Responsivity Variation over Temperature | |
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| 全不銹鋼結(jié)構(gòu) | 全不銹鋼結(jié)構(gòu) | |
| 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 | ||
| 增強(qiáng)功能 918D 系列光電二極管探頭通過(guò)*功能提升性能，旨在使其優(yōu)于 Newport 經(jīng)過(guò)業(yè)內(nèi)驗(yàn)證的 818 系列校準(zhǔn)光電二極管探頭。它們具有集成的校準(zhǔn)數(shù)據(jù)存儲(chǔ)器、內(nèi)置 OD1、OD2 或 OD3 衰減片（帶有電子衰減片開(kāi)/關(guān)傳感器）以及用于溫度漂移補(bǔ)償?shù)膫鞲须娮悠骷墒固綔y(cè)器在溫度變化時(shí)測(cè)量更為準(zhǔn)確）。 |  | |
 | 寬動(dòng)態(tài)范圍（具有內(nèi)置衰減器） 的 OD3 衰減技術(shù)將我們探測(cè)器的校準(zhǔn)光學(xué)動(dòng)態(tài)范圍擴(kuò)展了三個(gè)數(shù)量級(jí)。我們的衰減器設(shè)計(jì)提供高損傷閾值和光譜平坦度。通過(guò)與 Newport 正在使用的光電二極管相關(guān)聯(lián)的低 NEP，實(shí)現(xiàn)了更寬的動(dòng)態(tài)范圍。對(duì)于小于 1 mW 的輸入功率，我們建議將衰減器置于 OFF 位置（對(duì)于 918D-UV-OD3R 在 200 - 400 nm 之間則為 0.1 mW），使信噪比達(dá)到。該衰減器的通光孔徑為 10.3mm。 | |
| 的校準(zhǔn)不確定性 918D 系列包括一個(gè)采用 NIST 可追溯標(biāo)準(zhǔn)，利用 Newport 光學(xué)探頭校準(zhǔn)設(shè)施維護(hù)的高精度設(shè)備完成的全光譜響應(yīng)校準(zhǔn)。嚴(yán)格的校準(zhǔn)設(shè)備和過(guò)程控制可實(shí)現(xiàn)業(yè)內(nèi)的校準(zhǔn)不確定性。每個(gè)探頭都附有校準(zhǔn)數(shù)據(jù)，這些數(shù)據(jù)以電子形式存儲(chǔ)在探測(cè)器的 EEPROM 中。每個(gè)探頭都附有校準(zhǔn)證書(shū)以及衰減器模式和無(wú)衰減器模式下的實(shí)際校準(zhǔn)曲線(xiàn)和數(shù)據(jù)。為了保持精度、保證性能，Newport 建議每年對(duì)光電二極管探頭進(jìn)行校準(zhǔn)。 |  | |
| 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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| 全不銹鋼結(jié)構(gòu) | ||
| 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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| 全不銹鋼結(jié)構(gòu) | 全不銹鋼結(jié)構(gòu) | |
