| Autor: |
Savransky, V. V., Kupov, M. R., Pyatyshev, A. Yu., Sverbil, P. P. |
| Zdroj: |
Bulletin of the Lebedev Physics Institute; Jul2021, Vol. 48 Issue 7, p221-225, 5p |
| Abstrakt: |
It was found that resonant two-photon-excited luminescence is observed in zinc-phosphate optical glass doped with sodium uranate with a concentration of 2.8%, excited by pulse-periodic radiation of gold vapor laser (λ = 627.8 nm). In this case, the wavelength of exciting laser radiation fell within the absorption band of zinc-phosphate optical glass. The average radiation power of the gold vapor laser was 0.2 W at a lasing pulse repetition rate of 10 kHz and a pulse duration of 15 ns. The peak intensity of focused laser radiation on the sample surface was ~5 × 106 W/cm2. The recorded spectrum of resonant two-photon-excited luminescence consisted of several bands in the green-orange spectral region. The efficiency of resonant two-photon-excited luminescence was about 10–3–10–4, which exceeds the efficiency of two-photon-excited luminescence observed under nonresonant conditions by one—two orders of magnitude. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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