UVG20C

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Photodiodes are one of the most popular types of optical sensors used in a variety of applications. The UVG20C is a virtual photoconductor-type photodiode which utilizes a unique structure to provide superior performance in applications such as photometry, trace detection of fluorescence, and sunlight applications, to name a few.

The UVG20C is composed of a photosensitive field effect transistor. The gain is adjustable by changing the gate potential and the pulse risetime can also be adjusted with the gate voltage. The UVG20C has very high dynamic range and is well suited for applications such as fluorescence detection and sunlight measurement.

The conventional structure of the photodiode consists of a p-type silicon diode with a reverse-biased non-transistorized internal Photo-Adsorpher whose responsivity is determined by the bandgap between conduction and valence bands. However, the structure of the UVG20C has a unique internal photo-adsorpher which converts the incoming optical signal directly into measurable electrical signals. The UVG20C has a dynamic range of more than 500:1 and its quantum efficiency is greater than 60%.

When an external light source shines on the photodiode the energy is absorbed and a photocurrent is created. The amount of current created depends on the intensity of the light and the excitation frequency. The UVG20C is very sensitive to small changes in light intensity and fluctuations in ambient light leading to superior performance in many applications.

The UVG20C can be used in a vast range of applications. It can be used to detect trace levels of chemicals and radiation, to measure UV radiation, as a light measuring device, for optical communication applications, and to detect the presence of gas. The UVG20C is also used in spectroscopy, and imaging.

The UVG20C is also well suited for radiation measurements as the sensitivity is higher than with silicon photodiodes and the response time is fast. The UVG20C can be used in downhole logging, remote sensing, nuclear detection, medical dosimetry, and radiation therapy.

In summary, the UVG20C is a highly versatile and sensitive photodiode suitable for a wide range of applications. With its adjustable gain, adjustable pulse risetime, and large dynamic range, the UVG20C offers superior performance over conventional photodiodes in many applications. Its low noise characteristics make it particularly suitable for fluorescence detection and radiation measurements. Therefore, the UVG20C is an ideal choice for a variety of applications in optical sensing.

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