Excitation Wavelength Dependent Nonlinear Absorption Mechanisms and Optical Limiting Properties of Bi12sio20 Single Crystal

dc.authorid Gasanly, Nizami/0000-0002-3199-6686
dc.authorid KARATAY, Ahmet/0000-0001-9373-801X
dc.authorid Isik, Mehmet/0000-0003-2119-8266
dc.authorid DOGAN, Anil/0000-0002-4905-1293
dc.authorscopusid 57222135856
dc.authorscopusid 57215491663
dc.authorscopusid 23766993100
dc.authorscopusid 57210148812
dc.authorscopusid 35580905900
dc.authorscopusid 7004592418
dc.authorwosid Gasanly, Nizami/HRE-1447-2023
dc.authorwosid Isik, Mehmet/KMY-5305-2024
dc.authorwosid KARATAY, Ahmet/C-9985-2018
dc.contributor.author Dogan, Anil
dc.contributor.author Karatay, Ahmet
dc.contributor.author Isik, Mehmet
dc.contributor.author Pepe, Yasemin
dc.contributor.author Gasanly, Nizami
dc.contributor.author Elmali, Ayhan
dc.contributor.other Department of Electrical & Electronics Engineering
dc.date.accessioned 2024-07-05T15:26:48Z
dc.date.available 2024-07-05T15:26:48Z
dc.date.issued 2023
dc.department Atılım University en_US
dc.department-temp [Karatay, Ahmet; Pepe, Yasemin; Elmali, Ayhan] Ankara Univ, Fac Engn, Dept Engn Phys, TR-06100 Ankara, Turkiye; [Isik, Mehmet] Atilim Univ, Dept Elect & Elect Engn, TR-06836 Ankara, Turkiye; [Gasanly, Nizami] Middle East Tech Univ, Sci & Art Fac, Dept Phys, TR-06800 Ankara, Turkiye en_US
dc.description Gasanly, Nizami/0000-0002-3199-6686; KARATAY, Ahmet/0000-0001-9373-801X; Isik, Mehmet/0000-0003-2119-8266; DOGAN, Anil/0000-0002-4905-1293 en_US
dc.description.abstract Nonlinear absorption mechanisms (NA), excitation wavelength dependence, and defect states of Bi12SiO20 (BSO) single crystal were investigated. The band gap and Urbach energies were found to be 2.51 and 0.4 eV from the absorption spectra. To evaluate the effect of excitation energy on the NA mechanism of the BSO single crystal, open aperture Z-scan experiment with 4 ns laser pulse at 532 and 1064 nm wavelengths with different intensities was performed. Obtained data were analyzed with a theoretical model considering the contributions of one photon absorption (OPA), two photon absorption (TPA) and free carrier absorption (FCA) to NA. The results indicated that the NA behavior decreased with increasing of the pump intensity as the defect states at around 2.32 eV by OPA at 532 nm, and TPA at 1064 nm excitations. The dominant NA mechanisms are OPA and sequential TPA at 532 nm as compared to the 1064 nm. A higher NA coefficient was obtained at 532 nm as compared to 1064 nm excitation. This observation was attributed to higher contribution of OPA at 532 nm even at lower input intensities compared to TPA contribution at 1064 nm. Onset optical limiting thresholds were found as 0.34 and 0.68 mJ/cm2 for 532 and 1064 nm input beams, respectively. In the light of the results, the BSO single crystal may be used as a saturable absorber or an optical limiter at convenient input intensity by effectively adjusting defect states and excitation wavelength. en_US
dc.identifier.citationcount 3
dc.identifier.doi 10.1016/j.optmat.2023.113882
dc.identifier.issn 0925-3467
dc.identifier.issn 1873-1252
dc.identifier.scopus 2-s2.0-85159552139
dc.identifier.uri https://doi.org/10.1016/j.optmat.2023.113882
dc.identifier.uri https://hdl.handle.net/20.500.14411/2604
dc.identifier.volume 140 en_US
dc.identifier.wos WOS:001009735900001
dc.identifier.wosquality Q2
dc.institutionauthor Işık, Mehmet
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/closedAccess en_US
dc.scopus.citedbyCount 9
dc.subject Bi12SiO20 crystal en_US
dc.subject Defect states en_US
dc.subject Nonlinear absorption en_US
dc.subject Optical limiting en_US
dc.title Excitation Wavelength Dependent Nonlinear Absorption Mechanisms and Optical Limiting Properties of Bi12sio20 Single Crystal en_US
dc.type Article en_US
dc.wos.citedbyCount 8
dspace.entity.type Publication
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