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UV–Vis Spectrometers

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

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Performance testing of electrostatically focused uv-visible image converters with deflection capability.

K H Stephan, H Samuelsson

|February 16, 2010

Summary

Two prototype ultraviolet (UV) to visible image converter tubes were tested for their photometric and imaging performance. These magnetically deflectable, electrostatically focused devices showed specific performance characteristics in the visible and vacuum UV spectral regions.

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Area of Science:

Optics and Photonics
Image Intensification Technology
Spectroscopy

Background:

Development of advanced imaging systems is crucial for scientific observation.
Image converter tubes offer a pathway for detecting and visualizing light in challenging spectral regions.
Previous generations of image converters lacked advanced deflection capabilities.

Purpose of the Study:

To evaluate the performance of two prototype ultraviolet (UV) to visible image converter tubes.
To characterize photometric and imaging properties, including deflection capabilities.
To assess the suitability of these tubes for applications in the visible and vacuum UV spectral regions.

Main Methods:

Performance testing of two electrostatically focused, triode-structured, magnetically deflectable image converter tubes.
Utilized an absolute intensity calibration facility for visible and vacuum UV spectral regions.
Detailed reporting of test procedures and acquired performance data.

Main Results:

Characterization of photometric parameters related to light conversion efficiency and sensitivity.
Evaluation of imaging properties, including resolution and distortion, with deflection.
Performance data obtained across the visible and vacuum UV spectral ranges.

Conclusions:

The tested prototype UV to visible image converter tubes demonstrate specific performance metrics for photometric and imaging tasks.
The magnetic deflection capability enhances the versatility of these imaging devices.
Results provide essential data for the application and further development of these converter tubes.