LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling
The possibilities of LiNbO<sub>3</sub>-Tm<sup>3+</sup> crystals for optical cooling based on anti-Stokes luminescence in the wavelength range of 1818–2200 nm are investigated. The concentration dependences of the final temperature of the crystal have been determined under con...
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MDPI AG
2021-01-01
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| author | Ninel Kokanyan Nune Mkhitaryan Gagik Demirkhanyan Ajith Kumar Michel Aillerie Dhiraj Sardar Edvard Kokanyan |
| author_facet | Ninel Kokanyan Nune Mkhitaryan Gagik Demirkhanyan Ajith Kumar Michel Aillerie Dhiraj Sardar Edvard Kokanyan |
| author_sort | Ninel Kokanyan |
| collection | DOAJ |
| description | The possibilities of LiNbO<sub>3</sub>-Tm<sup>3+</sup> crystals for optical cooling based on anti-Stokes luminescence in the wavelength range of 1818–2200 nm are investigated. The concentration dependences of the final temperature of the crystal have been determined under continuous (CW) excitation at wavelengths of 1822–1977 nm with a pump intensity <inline-formula><math display="inline"><semantics><mrow><msub><mi>F</mi><mi>p</mi></msub><mo>=</mo><mn>5</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mn>21</mn></mrow></msup><mtext> </mtext><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup><msup><mi mathvariant="normal">s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math></inline-formula>. It was shown that significant cooling with ∆T = 22 K, 19 K, and 16.4 K can be achieved, respectively, with excitation at wavelengths 1977, 1967, and 1948 nm. |
| first_indexed | 2024-03-09T05:24:48Z |
| format | Article |
| id | doaj.art-e9770c6ab6ab4c47a0f7917e1508e813 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T05:24:48Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-e9770c6ab6ab4c47a0f7917e1508e8132023-12-03T12:38:08ZengMDPI AGCrystals2073-43522021-01-011115010.3390/cryst11010050LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical CoolingNinel Kokanyan0Nune Mkhitaryan1Gagik Demirkhanyan2Ajith Kumar3Michel Aillerie4Dhiraj Sardar5Edvard Kokanyan6Chaire Photonique, LMOPS, CentraleSupélec, 2 rue Edouard Belin, 57220 Metz, FranceArmenian State Pedagogical University after Kh. Abovyan, TigranMetsi Ave., 17, Yerevan 0010, ArmeniaArmenian State Pedagogical University after Kh. Abovyan, TigranMetsi Ave., 17, Yerevan 0010, ArmeniaDepartment of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX 78249, USAUniversité de Lorraine, LMOPS, 2 rue Edouard Belin, 57070 Metz, FranceDepartment of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX 78249, USAArmenian State Pedagogical University after Kh. Abovyan, TigranMetsi Ave., 17, Yerevan 0010, ArmeniaThe possibilities of LiNbO<sub>3</sub>-Tm<sup>3+</sup> crystals for optical cooling based on anti-Stokes luminescence in the wavelength range of 1818–2200 nm are investigated. The concentration dependences of the final temperature of the crystal have been determined under continuous (CW) excitation at wavelengths of 1822–1977 nm with a pump intensity <inline-formula><math display="inline"><semantics><mrow><msub><mi>F</mi><mi>p</mi></msub><mo>=</mo><mn>5</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mn>21</mn></mrow></msup><mtext> </mtext><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup><msup><mi mathvariant="normal">s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math></inline-formula>. It was shown that significant cooling with ∆T = 22 K, 19 K, and 16.4 K can be achieved, respectively, with excitation at wavelengths 1977, 1967, and 1948 nm.https://www.mdpi.com/2073-4352/11/1/50Lithium Niobate crystalsoptical coolingrare-earth ions |
| spellingShingle | Ninel Kokanyan Nune Mkhitaryan Gagik Demirkhanyan Ajith Kumar Michel Aillerie Dhiraj Sardar Edvard Kokanyan LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling Crystals Lithium Niobate crystals optical cooling rare-earth ions |
| title | LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling |
| title_full | LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling |
| title_fullStr | LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling |
| title_full_unstemmed | LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling |
| title_short | LiNbO<sub>3</sub>-Tm<sup>3+</sup> Crystal. Material for Optical Cooling |
| title_sort | linbo sub 3 sub tm sup 3 sup crystal material for optical cooling |
| topic | Lithium Niobate crystals optical cooling rare-earth ions |
| url | https://www.mdpi.com/2073-4352/11/1/50 |
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