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This article is cited in 5 scientific papers (total in 5 papers)
Brief Communications
Optical strength of $YAG$ and $LiNbO_3$ crystals irradiated with giant pulses from a $YAG:Er^{3+}$ laser $(\lambda=2,94\mu m)$
Kh. S. Bagdasarov, N. V. Belugina, G. V. Gomelauri, A. A. Manenkov P. N. Lebedev Physical Institute, the USSR Academy of Sciences, Moscow
Abstract:
Measurements were made of the bulk damage threshold $I_d$ of yttrium aluminum garnet $(YAG)$ crystals, either free of deliberately introduced impurities or activated with $Er^{3+}$ ions in different concentrations (up to 80 wt.procent), and also of $LiNbO_3$ crystals. This threshold was determined using giant pulses from a $YAG:Er^{3+}$ laser emitting at $(\lambda=2,94\mu m)$; the energy per pulse was 70 mJ and the pulse duration was 120 nsec. In the case of $YAG$ crystals it was found that $I_d$ varied considerably from sample to sample in the range $I_d=(2,5-18)\cdot10^{10}$ W/cm${}^2$, which was not associated with the presence of $Er^{3+}$ but was clearly due to the presence of some accidental impurities. A considerable increase in $I_d$ was observed for $YAG:Er^{3+}$ samples characterized by low damage thresholds when these samples were annealed in air. In the case of $LiNbO_3$, a typical value of the damage threshold was $I_d\approx10^{11}$ W/cm${}^2$. The results obtained indicated a sufficiently high optical strength of $YAG:Er^{3+}$ and $LiNbO_3$ crystals, used respectively as the active and modulating elements in $YAG:Er^{3+}$ lasers.
Received: 11.01.1980
Citation:
Kh. S. Bagdasarov, N. V. Belugina, G. V. Gomelauri, A. A. Manenkov, “Optical strength of $YAG$ and $LiNbO_3$ crystals irradiated with giant pulses from a $YAG:Er^{3+}$ laser $(\lambda=2,94\mu m)$”, Kvantovaya Elektronika, 7:6 (1980), 1351–1353 [Sov J Quantum Electron, 10:6 (1980), 777–778]
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https://www.mathnet.ru/eng/qe10304 https://www.mathnet.ru/eng/qe/v7/i6/p1351
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