Effect of impurities on the optical properties of KTP single crystals grown from flux
In the present work, KTP crystals have been grown by spontaneous nucleation technique in flux medium using K6P4O13 flux. 0.4-1 °C/h cooling rates were applied in the spontaneous nucleation process. The presence and amount of impurities has been determined by using XRF. The optical transmissi...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2017-11-01
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| Series: | Iranian Journal of Physics Research |
| Subjects: | |
| Online Access: | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-2558-1&slc_lang=en&sid=1 |
| _version_ | 1818319234659254272 |
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| author | Hamideh Zaliani M J Tafreshi Dariush Souri |
| author_facet | Hamideh Zaliani M J Tafreshi Dariush Souri |
| author_sort | Hamideh Zaliani |
| collection | DOAJ |
| description | In the present work, KTP crystals have been grown by spontaneous nucleation technique in flux medium using K6P4O13 flux. 0.4-1 °C/h cooling rates were applied in the spontaneous nucleation process. The presence and amount of impurities has been determined by using XRF. The optical transmission spectra of impure KTP crystals in the UV–visible region are discussed. The transmission cut-off is clearly shown at the optical absorption edge, as well as the rapidly reduced absorption with increasing wavelength. It is shown that the presence of impurity shifts the absorption edge of KTP towards lower energy region. The wavelength dependence of absorption coefficient is determined in the UV–visible range, and the characteristics of the optical absorption edge are discussed. Results reveal that the absorption edge and the type of optical charge carrier transition can be attributed to indirect transition for these crystals. It is shown that presence of impurity decreases the indirect band gap (Eg) of KTP crystals, causing the indirect transition absorption edge to move towards lower energy. |
| first_indexed | 2024-12-13T10:05:53Z |
| format | Article |
| id | doaj.art-982dd9fcdb444dc9b4a03871eb6584a6 |
| institution | Directory Open Access Journal |
| issn | 1682-6957 2345-3664 |
| language | English |
| last_indexed | 2024-12-13T10:05:53Z |
| publishDate | 2017-11-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Iranian Journal of Physics Research |
| spelling | doaj.art-982dd9fcdb444dc9b4a03871eb6584a62022-12-21T23:51:33ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642017-11-01174630630Effect of impurities on the optical properties of KTP single crystals grown from fluxHamideh Zaliani0M J Tafreshi1Dariush Souri2 Department of Physics, Semnan University, Semnan, Iran Department of Physics, Semnan University, Semnan, Iran Malayer University In the present work, KTP crystals have been grown by spontaneous nucleation technique in flux medium using K6P4O13 flux. 0.4-1 °C/h cooling rates were applied in the spontaneous nucleation process. The presence and amount of impurities has been determined by using XRF. The optical transmission spectra of impure KTP crystals in the UV–visible region are discussed. The transmission cut-off is clearly shown at the optical absorption edge, as well as the rapidly reduced absorption with increasing wavelength. It is shown that the presence of impurity shifts the absorption edge of KTP towards lower energy region. The wavelength dependence of absorption coefficient is determined in the UV–visible range, and the characteristics of the optical absorption edge are discussed. Results reveal that the absorption edge and the type of optical charge carrier transition can be attributed to indirect transition for these crystals. It is shown that presence of impurity decreases the indirect band gap (Eg) of KTP crystals, causing the indirect transition absorption edge to move towards lower energy.http://ijpr.iut.ac.ir/browse.php?a_code=A-10-2558-1&slc_lang=en&sid=1Spontaneous nucleation method KTP crystals Energy gap Transmission spectrum Flux method |
| spellingShingle | Hamideh Zaliani M J Tafreshi Dariush Souri Effect of impurities on the optical properties of KTP single crystals grown from flux Iranian Journal of Physics Research Spontaneous nucleation method KTP crystals Energy gap Transmission spectrum Flux method |
| title | Effect of impurities on the optical properties of KTP single crystals grown from flux |
| title_full | Effect of impurities on the optical properties of KTP single crystals grown from flux |
| title_fullStr | Effect of impurities on the optical properties of KTP single crystals grown from flux |
| title_full_unstemmed | Effect of impurities on the optical properties of KTP single crystals grown from flux |
| title_short | Effect of impurities on the optical properties of KTP single crystals grown from flux |
| title_sort | effect of impurities on the optical properties of ktp single crystals grown from flux |
| topic | Spontaneous nucleation method KTP crystals Energy gap Transmission spectrum Flux method |
| url | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-2558-1&slc_lang=en&sid=1 |
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