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Raman gains of ADP and KDP crystals |
Zhou Hai-Liang (周海亮)a b c, Zhang Qing-Hua (张清华)d, Wang Bo (王波)a b, Xu Xin-Guang (许心光)a b, Wang Zheng-Ping (王正平)a b, Sun Xun (孙洵)a b, Zhang Fang (张芳)a b, Zhang Li-Song (张立松)a b, Liu Bao-An (刘宝安)a b, Chai Xiang-Xu (柴向旭)a b |
a State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; b Key Laboratory of Functional Crystal Materials and Device (Shandong University), Ministry of Education, Jinan 250100, China; c College of Information Science and Engineering, Shandong Agricultural University, Taian 271018, China; d Chengdu Fine Optical Engineering Research Centre, Chengdu 610041, China |
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Abstract In this paper, the Raman gain coefficients of ammonium dihydrogen phosphate (ADP) and potassium dihydrogen phosphate (KDP) crystals are measured. By using a pump source of a 30-ps, 532-nm laser, the gain coefficients of ADP and KDP are 1.22 cm/GW, and 0.91 cm/GW, respectively. While for a 20-ps, 355-nm pump laser, the gain coefficients of these two crystals are similar, which are 1.95 cm/GW for ADP and 1.86 for KDP. The present results indicate that for ultra-violet frequency conversion, the problem of stimulated Raman scattering for ADP crystal will not be more serious than that for KDP crystal. Considering other advantages such the larger nonlinear optical coefficient, higher laser damage threshold, and lower noncritical phase-matching temperature, it can be anticipated that ADP will be a powerful competitor to KDP in large aperture, high energy third-harmonic generation or fourth-harmonic generation applications.
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Received: 28 June 2014
Revised: 13 October 2014
Accepted manuscript online:
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PACS:
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42.55.Ye
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(Raman lasers)
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42.65.Dr
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(Stimulated Raman scattering; CARS)
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42.70.Hj
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(Laser materials)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51323002 and 51402173), the Independent Innovation Foundation of Shandong University, China (Grant Nos. IIFSDU and 2012JC016), the Program for New Century Excellent Talents in University, China (Grant No. NCET-10-0552), the Fund from the Key Laboratory of Neutron Physics, China Academy of Engineering Physics (Grant No. 2014BB07), and the Natural Science Foundation for Distinguished Young Scholar of Shandong Province, China (Grant No. JQ201218). |
Corresponding Authors:
Wang Zheng-Ping, Sun Xun
E-mail: zpwang@sdu.edu.cn;sunxun@sdu.edu.cn
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Cite this article:
Zhou Hai-Liang (周海亮), Zhang Qing-Hua (张清华), Wang Bo (王波), Xu Xin-Guang (许心光), Wang Zheng-Ping (王正平), Sun Xun (孙洵), Zhang Fang (张芳), Zhang Li-Song (张立松), Liu Bao-An (刘宝安), Chai Xiang-Xu (柴向旭) Raman gains of ADP and KDP crystals 2015 Chin. Phys. B 24 044206
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