With the development of space lasers, research on the stability of laser films in space environments is becoming more and more important. The space laser film will be damaged by protons, gamma rays and other space radiation environments, and it will be affected by laser radiation, too. This puts forward higher requirements for space laser film elements, so it is essential to carry out space environment simulation tests on laser films. In this paper, the effect of 40keV proton on SiO2 film was studied and then the 355nm laser damage threshold test on it was performed. It was found that the ultraviolet absorption of the film irradiated by proton increased, resulting in the decrease of its transmittance and its ability to resist laser damage.
Lumogen Yellow S 0790 is a commercial pigment based on azomethine and is used for enhancing charge-coupled
device (CCD) for detecting ultraviolet radiation. It's used as a wavelength up-shifter, whereby short wavelength
ultraviolet (UV) light that is absorbed by the material is rapidly re-emitted with longer wavelengths in the visible spectra,
for improving the spectral response of CCD detectors. In this work we research on differences of the crystallized sample
and the re-crystallized sample in crystal structure, morphology and optical properties, including laser-induced
fluorescence excitation spectrum, emission spectrum and Raman spectra. The results show that re-crystallized Lumogen
sample has better crystalline structure on the application of ultraviolet sensitizer. By using the re-crystallized
as-deposited Lumogen films on glass substrate in front of the CCD detector, ultraviolet can be detected and quantized
better.
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