Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching
Random quasi-phase matching (RQPM) in polycrystalline materials has been considered as an important technique for nonlinear optical frequency conversion, especially in wideband laser generation involving femtosecond lasers. In this paper, optical rectification (OR) based on RQPM in ZnSe ceramics was...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/9/1188 |
| _version_ | 1797489743019114496 |
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| author | Sijia Wang Kai Zhong Hongzhan Qiao Fangjie Li Jining Li Degang Xu Jianquan Yao |
| author_facet | Sijia Wang Kai Zhong Hongzhan Qiao Fangjie Li Jining Li Degang Xu Jianquan Yao |
| author_sort | Sijia Wang |
| collection | DOAJ |
| description | Random quasi-phase matching (RQPM) in polycrystalline materials has been considered as an important technique for nonlinear optical frequency conversion, especially in wideband laser generation involving femtosecond lasers. In this paper, optical rectification (OR) based on RQPM in ZnSe ceramics was investigated for the first time, which could convert ultrashort optical pulses to broadband terahertz waves. A theoretical model of RQPM OR was built, with which the effects of material grain size, thickness, pump wavelength and pump pulse duration on terahertz generation, were simulated and discussed. It was found that RQPM OR in ZnSe is indeed effective in terahertz generation but insensitive to the material grain size and pump wavelength RQPM OR is even better than traditional single crystals such as ZnTe in bandwidth and robustness. The results can be a reference to optimize the RQPM OR nonlinear process, and hopefully, this work will promote the application of costless polycrystalline materials in the hot field of terahertz generation. |
| first_indexed | 2024-03-10T00:21:01Z |
| format | Article |
| id | doaj.art-97610307829f42a3a7e82f239068ef51 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T00:21:01Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-97610307829f42a3a7e82f239068ef512023-11-23T15:42:49ZengMDPI AGCrystals2073-43522022-08-01129118810.3390/cryst12091188Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase MatchingSijia Wang0Kai Zhong1Hongzhan Qiao2Fangjie Li3Jining Li4Degang Xu5Jianquan Yao6Key Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Optoelectronics Information Technology (Ministry of Education), School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, ChinaRandom quasi-phase matching (RQPM) in polycrystalline materials has been considered as an important technique for nonlinear optical frequency conversion, especially in wideband laser generation involving femtosecond lasers. In this paper, optical rectification (OR) based on RQPM in ZnSe ceramics was investigated for the first time, which could convert ultrashort optical pulses to broadband terahertz waves. A theoretical model of RQPM OR was built, with which the effects of material grain size, thickness, pump wavelength and pump pulse duration on terahertz generation, were simulated and discussed. It was found that RQPM OR in ZnSe is indeed effective in terahertz generation but insensitive to the material grain size and pump wavelength RQPM OR is even better than traditional single crystals such as ZnTe in bandwidth and robustness. The results can be a reference to optimize the RQPM OR nonlinear process, and hopefully, this work will promote the application of costless polycrystalline materials in the hot field of terahertz generation.https://www.mdpi.com/2073-4352/12/9/1188random quasi-phase matchingpolycrystalline materialoptical rectificationterahertz wavesZnSe |
| spellingShingle | Sijia Wang Kai Zhong Hongzhan Qiao Fangjie Li Jining Li Degang Xu Jianquan Yao Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching Crystals random quasi-phase matching polycrystalline material optical rectification terahertz waves ZnSe |
| title | Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching |
| title_full | Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching |
| title_fullStr | Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching |
| title_full_unstemmed | Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching |
| title_short | Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching |
| title_sort | study of optical rectification in polycrystalline materials based on random quasi phase matching |
| topic | random quasi-phase matching polycrystalline material optical rectification terahertz waves ZnSe |
| url | https://www.mdpi.com/2073-4352/12/9/1188 |
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