Optical properties of double doped LiNbO3:Gd:Mg crystals
By direct alloying of congruent melt with magnesium and gadolinium oxides, compositionally uniform nonlinear optical single double doped crystals with different content of dopants have been grown: LiNbO3:Gd3+(0,003):Mg2+(0,65 wt. %), LiNbO3:Gd3+(0,23):Mg2+ (0,75 wt. %) and LiNbO3:Gd3+(0,25):Mg2+(0,7...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Tver State University
2023-12-01
|
| Series: | Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов |
| Subjects: | |
| Online Access: | https://physchemaspects.ru/2023/doi-10-26456-pcascnn-2023-15-207/?lang=en |
| _version_ | 1797421056881852416 |
|---|---|
| author | N.A. Teplyakova N.V. Sidorov M.N. Palatnikov |
| author_facet | N.A. Teplyakova N.V. Sidorov M.N. Palatnikov |
| author_sort | N.A. Teplyakova |
| collection | DOAJ |
| description | By direct alloying of congruent melt with magnesium and gadolinium oxides, compositionally uniform nonlinear optical single double doped crystals with different content of dopants have been grown: LiNbO3:Gd3+(0,003):Mg2+(0,65 wt. %), LiNbO3:Gd3+(0,23):Mg2+ (0,75 wt. %) and LiNbO3:Gd3+(0,25):Mg2+(0,75 wt. %). The results obtained by laser conoscopy and photoinduced light scattering indicate a high structural perfection of the grown crystals. The results give grounds to assert that LiNbO3:Gd:Mg crystals are close to a stoichiometric crystal in some of their properties. A low value of the coercive field (≈2,3 kV/cm) is one of such properties of stoichiometric and magnesium-doped LiNbO3 crystals, which are important for creating materials for laser radiation conversion on periodically polarized submicron-sized domains with flat boundaries. In this case, the grown LiNbO3:Gd:Mg crystals have a much higher optical uniformity than a stoichiometric crystal. Crystals of LiNbO3:Gd3+(0,003):Mg2+ (0,65 wt. %) and LiNbO3:Gd3+(0,23):Mg2+ (0,75 wt. %) have the highest optical uniformity and the absence of the photorefraction effect. Increase of gadolinium concentration to 0,25 wt. % leads to increased distortion of the conoscopic pattern and to the appearance of a significant photorefractive response of the LiNbO3:Gd3+(0,25):Mg2+(0,75 wt. %) crystal. |
| first_indexed | 2024-03-09T07:11:25Z |
| format | Article |
| id | doaj.art-7bea9e7fb60343cca9e1562818509947 |
| institution | Directory Open Access Journal |
| issn | 2226-4442 2658-4360 |
| language | Russian |
| last_indexed | 2024-03-09T07:11:25Z |
| publishDate | 2023-12-01 |
| publisher | Tver State University |
| record_format | Article |
| series | Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов |
| spelling | doaj.art-7bea9e7fb60343cca9e15628185099472023-12-03T09:05:15ZrusTver State UniversityФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов2226-44422658-43602023-12-011520721410.26456/pcascnn/2023.15.207Optical properties of double doped LiNbO3:Gd:Mg crystalsN.A. Teplyakova0N.V. Sidorov1M.N. Palatnikov 2Tananaev Institute of Chemistry – Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, RussiaTananaev Institute of Chemistry – Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, RussiaTananaev Institute of Chemistry – Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, RussiaBy direct alloying of congruent melt with magnesium and gadolinium oxides, compositionally uniform nonlinear optical single double doped crystals with different content of dopants have been grown: LiNbO3:Gd3+(0,003):Mg2+(0,65 wt. %), LiNbO3:Gd3+(0,23):Mg2+ (0,75 wt. %) and LiNbO3:Gd3+(0,25):Mg2+(0,75 wt. %). The results obtained by laser conoscopy and photoinduced light scattering indicate a high structural perfection of the grown crystals. The results give grounds to assert that LiNbO3:Gd:Mg crystals are close to a stoichiometric crystal in some of their properties. A low value of the coercive field (≈2,3 kV/cm) is one of such properties of stoichiometric and magnesium-doped LiNbO3 crystals, which are important for creating materials for laser radiation conversion on periodically polarized submicron-sized domains with flat boundaries. In this case, the grown LiNbO3:Gd:Mg crystals have a much higher optical uniformity than a stoichiometric crystal. Crystals of LiNbO3:Gd3+(0,003):Mg2+ (0,65 wt. %) and LiNbO3:Gd3+(0,23):Mg2+ (0,75 wt. %) have the highest optical uniformity and the absence of the photorefraction effect. Increase of gadolinium concentration to 0,25 wt. % leads to increased distortion of the conoscopic pattern and to the appearance of a significant photorefractive response of the LiNbO3:Gd3+(0,25):Mg2+(0,75 wt. %) crystal.https://physchemaspects.ru/2023/doi-10-26456-pcascnn-2023-15-207/?lang=enlithium niobatecrystaldefectslaser conoscopyphotorefractive properties |
| spellingShingle | N.A. Teplyakova N.V. Sidorov M.N. Palatnikov Optical properties of double doped LiNbO3:Gd:Mg crystals Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов lithium niobate crystal defects laser conoscopy photorefractive properties |
| title | Optical properties of double doped LiNbO3:Gd:Mg crystals |
| title_full | Optical properties of double doped LiNbO3:Gd:Mg crystals |
| title_fullStr | Optical properties of double doped LiNbO3:Gd:Mg crystals |
| title_full_unstemmed | Optical properties of double doped LiNbO3:Gd:Mg crystals |
| title_short | Optical properties of double doped LiNbO3:Gd:Mg crystals |
| title_sort | optical properties of double doped linbo3 gd mg crystals |
| topic | lithium niobate crystal defects laser conoscopy photorefractive properties |
| url | https://physchemaspects.ru/2023/doi-10-26456-pcascnn-2023-15-207/?lang=en |
| work_keys_str_mv | AT nateplyakova opticalpropertiesofdoubledopedlinbo3gdmgcrystals AT nvsidorov opticalpropertiesofdoubledopedlinbo3gdmgcrystals AT mnpalatnikov opticalpropertiesofdoubledopedlinbo3gdmgcrystals |