Help with Photosensor Modules specifications:
Photosensor Type
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| Photomultiplier Tube | A tube consisting of an evacuated envelope with a photocathode that emits electrons when exposed to light. These electrons are accelerated by a positive electrostatic field and fall upon a metal surface where they emit secondary electrons that are again accelerated to generate more electrons at the next metal surface, and so on. The whole arrangement thus acts as a combination of a simple photocell with a high-gain amplifier in a self-contained unit. | ||
| Avalanche Photodiode | A device that utilizes avalanche multiplication of photocurrent by means of hole-electrons created by absorbed photons. When the device's reverse-bias voltage nears breakdown level, the hole-electron pairs collide with ions to create additional hole-electron pairs, thus achieving a signal gain. | ||
| PN Photodiode | |||
| PIN Photodiode | A diode with a large intrinsic region sandwiched between P-doped and N-doped semiconducting regions. Photons absorbed in this region create electron-hole pairs that are then separated by an electric field, thus generating an electric current in a load circuit. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Output Type: | |||
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| Voltage Output | The photosensor output is a voltage. | ||
| Current Output | The photosensor output is a current. | ||
| Photon Counting | The photosensor is photon counting. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Number of Channels: | |||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Photosensor Performance
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| Effective Area Diameter or Length: | The diameter of the active area of the photosensor if circular or the length if square or rectangular. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Effective Area Width: | The width of the active area of the photosensor if square or rectangular. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Spectral Response: | The spectral response range of incident light the photosensor detects, also called wavelength range. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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| Supply Voltage: | The supply voltage of the photosensor. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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PMT Photosensor Sensitivity
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| Voltage Output Sensitivity: | This measure of sensitivity applies only to photosensors with voltage output. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Current Output Sensitivity: | This measure of sensitivity applies only to photosensors with current output. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Counting Sensitivity: | This measure of sensitivity applies only to photosensors for photon counting. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Photosensor Noise
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| Noise Equivalent Power (NEP): | The power of incident light, at a specific wavelength, required to produce a signal on the detector that is equal to the noise. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Photosensor Features
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| Cooled? | Some photosensors are cooled for better sensitivity. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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