Radiation resistance of nonlinear LiB3O5 crystals: optical properties

I. N. Ogorodnikov; A. V. Kruzhalov; A. V. Porotnikov

doi:10.1117/12.266521

4 February 1997 Radiation resistance of nonlinear LiB₃O₅ crystals: optical properties

I. N. Ogorodnikov, A. V. Kruzhalov, A. V. Porotnikov

Proceedings Volume 2967, Optical Inorganic Dielectric Materials and Devices; (1997) https://doi.org/10.1117/12.266521
Event: International Conference on Advanced Optical Materials and Devices, 1996, Riga, Latvia

Abstract

This paper presents the results of study of the radiation stability of LiB₃O₅ (LBO) crystals with regard to optical properties. LBO crystals of the high optical quality were studied under action of an electron beam with energy of 0.2 - 10 MeV, x-rays, and polarized synchrotron radiation of a high intensity. Both the trapped electron (B²) and hole (O^-) centers were revealed and their optical manifestations were studied in detail. In particular, the strong radiation-induced optical absorption band at lambda equals 306 nm, extending up to the spectral region of the second harmonic (at about 532 nm), was attributed to the optical transitions inside the O^- center. The accumulation of defects over the dose region between 10¹⁰ and 5 multiplied by 10¹⁶ electrons per cm² was measured. The accumulation curve at 77 K exhibits two well-defined flux regions: 10¹⁰-10¹⁴ and 10¹⁴- 10¹⁶ electrons per cm². The paper discusses the origin of radiation degradation of LiB₃O₅ optical properties.

Citation Download Citation

I. N. Ogorodnikov, A. V. Kruzhalov, and A. V. Porotnikov "Radiation resistance of nonlinear LiB₃O₅ crystals: optical properties", Proc. SPIE 2967, Optical Inorganic Dielectric Materials and Devices, (4 February 1997); https://doi.org/10.1117/12.266521

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