Photoionization of excited atoms and resonant absorption effects, which can decrease gas breakdown thresholds by high-power lasers at decreasing wavelengths, also improve low intensity detection sensitivities of gas-filled photodiodes when such devices are biased with dc fields close to gas breakdown. Spectral results indicate very promising potential sensitivity for detecting ultra-violet raidation. D* even in the visible is comparible to that of silicon photodiodes. The "relatively" large dc bias fields employed here improve speed of response significantly. Over moderate (10-7 - 10-8W) received signal powers response is non-linear with γ varying inversely with wavelength.
|Number of pages||16|
|Journal||IEEE Transactions on Plasma Science|
|State||Published - 1 Jan 1978|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Condensed Matter Physics