PDI-V485

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Optical Sensors - Photodiodes

Light sensors that measure the intensity of light falling on a surface are called photodiodes. Photodiodes are very sensitive and are used in many industrial and research applications. They are utilized in security systems, optical instrumentation, medical imaging, and energy harvesting. The PDI-V485 is a specialized type of photodiode designed for high-precision measurements and sensitive applications.

The PDI-V485 is a vacuum photodiode designed for measurements from the visible and near-infrared wavelengths. It has a spectral response of 405nm to 980nm and is highly sensitive to light wavelengths above 800nm. The device is designed for high-precision photometric and radiometric measurements. It has a low dark current and a linear spectral response. The PDI-V485 also features a microlens which helps improve the signal-to-noise ratio.

Application Fields

The PDI-V485 photodiode can be employed in a variety of applications. It is commonly used in spectroradiometers for measuring the emission and reflection of light from various surfaces. The device is also used in optical fiber lasers for power control and safety systems. It can be employed in medical imaging systems for measuring fluorescence or radiographs. Additionally, the PDI-V485 can be used as a light detector for optical communcation systems.

Working Principle

The PDI-V485 photodiode works on the principle of photoconductivity. When light strikes the surface of the diode it frees electrons and creates electron-hole pairs in a semiconductor material. The electron-hole pairs generate an electric current in the circuit. The current is proportional to the amount of light striking the surface. The amplified output charge of the diode is then amplified by an external amplifier.

The PDI-V485 is designed with a thin-film vacuum structure that reduces the dark current. The device is further equipped with a microlens to help suppress noise and improve signal-to-noise ratio. The device also features a large diameter active area which increases the sensitivity of the photodiode to visible and near-infrared wavelengths. The PDI-V485 has a high fill factor of 90% which enables maximum efficiency of detection.

The PDI-V485 is capable of precision measurements with a low noise floor and high linearity. It has low offset and temperature coefficients which helps provide improved accuracy and stability. Additionally, the device has a wide temperature range of -40°C to 125°C allowing for wide operational applications. The PDI-V485 exhibits excellent frequency response making it suitable for high speed applications.

Conclusion

The PDI-V485 is a vacuum photodiode designed for high-precision measurements in applications from spectro-radiometry to medical imaging. It features a spectral response from 405nm to 980nm and is highly sensitive to light wavelengths above 800nm. The device is designed with a thin-film vacuum structure which helps reduce dark current. It is also equipped with a microlens to help suppress noise and improve signal-to-noise ratio. Additionally, the PDI-V485 has a wide temperature range of -40°C to 125°C and a high frequency response making it suitable for high-speed applications.

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