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G. S. I. ABUDAGEL1, S. PETRIČEVIĆ1, P. MIHAILOVIĆ1, A. KOVAČEVIĆ2, J. L. RISTIĆ-DJUROVIĆ2, M. LEKIĆ2, M. ROMČEVIĆ2, S. ĆIRKOVIĆ2, J. TRAJIĆ2,* , N. ROMČEVIĆ2
Femtosecond pulsed laser irradiation can improve optical properties of Bi12GeO20 single crystals. We investigate if the effect occurs if the crystals are grown from high purity components. The samples are irradiated by a femtosecond pulsed laser beam of increasing power. The maximal transmittance of 44% occurs at the irradiating laser power of 451 mW. After irradiation, intensity of Raman spectra peaks increase, except for the peak at 203 cm–1, whose intensity decreases. The irradiation also changes the sample colour. Although the Verdet constant does not change, the absorption coefficient decreases significantly, which leads to magneto-optical quality improvement of approximately 70%..
Bismuth germanium oxide, Laser annealing, Raman spectroscopy, Crystal colour, Magneto-optical quality.
G. S. I. ABUDAGEL, S. PETRIČEVIĆ, P. MIHAILOVIĆ, A. KOVAČEVIĆ, J. L. RISTIĆ-DJUROVIĆ, M. LEKIĆ, M. ROMČEVIĆ, S. ĆIRKOVIĆ, J. TRAJIĆ, N. ROMČEVIĆ, Improvement of magneto-optical quality of high purity Bi12GeO20 single crystal induced by femtosecond pulsed laser irradiation, Optoelectronics and Advanced Materials - Rapid Communications, 11, 7-8, July-August 2017, pp.477-481 (2017).
Submitted at: March 3, 2017
Accepted at: Aug. 9, 2017
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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