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By using a traditional temperature reduction method, a large scale potassium dihydrogen phosphate (KDP) crystal is prepared. The refractive indices of different parts of this as-grown crystal are measured at 12 wavelengths between 0.253 and 1.530 um by using the new generation measuring instrument with an accuracy of 10-6. The measurement results show that refractive indices are inhomogenous in different parts of the large scale KDP crystal. The refractive index of the selected part close to the recovery area of crystal is smaller than that of selected part far from the recovery area. The deviation is on the order of 10-5-10-4. The refractive index inhomogeneity is related to the difference in crystalline quality among different parts in large KDP crystal. Furthermore, our measured data are compared with those in the literature published previously and the difference between them is analyzed. Meanwhile, by using root mean square method, numerical fitting to Sellmeier equation is conducted.
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Keywords:
- potassium dihydrogen phosphate /
- refractive index /
- homogeneity /
- Sellmeier equation
[1] Rhodes M A, Woods B, De Yoreo J J, Roberts D, Atherton L J 1995 Appl. Opt. 34 5312
[2] Chen M J, Cheng J, Li M Q, Xiao Y 2012 Chin. Phys. B 21 64212
[3] De Yoreo J J, Burnham A K, Whitman P K 2002 Int. Mater. Rev. 47 113
[4] Liu C S, Kioussis N 2004 Physics 33 9 (in Chinese) [刘长松, Kioussis N 2004 物理 33 9]
[5] Zernike F 1964 J. Opt. Soc. Am. 54 1215
[6] Philips R A 1966 J. Opt. Soc. Am. 56 629
[7] Yamazaki M, Ogawa T 1966 J. Opt. Soc. Am. 56 1407
[8] Kirby K W, Deshazer L G 1987 J. Opt. Soc. Am. B 4 1072
[9] De Yoreo J J, Woods B W 1993 J. Appl. Phys. 73 7780
[10] Sun Y, Wang S L, Gu Q T, Xu X G, Ding J X, Liu W J, Liu G X, Zhu S J 2012 Acta Phys. Sin. 61 210203 (in Chinese) [孙云, 王圣来, 顾庆天, 许心光, 丁建旭, 刘文洁, 刘光霞, 朱胜军 2012 61 210203]
[11] Chen J C, Huang Y S, Wei P C 1985 Acta Phys. Sin. 34 377 (in Chinese) [陈金长, 黄伊森, 魏培才 1985 34 377]
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[1] Rhodes M A, Woods B, De Yoreo J J, Roberts D, Atherton L J 1995 Appl. Opt. 34 5312
[2] Chen M J, Cheng J, Li M Q, Xiao Y 2012 Chin. Phys. B 21 64212
[3] De Yoreo J J, Burnham A K, Whitman P K 2002 Int. Mater. Rev. 47 113
[4] Liu C S, Kioussis N 2004 Physics 33 9 (in Chinese) [刘长松, Kioussis N 2004 物理 33 9]
[5] Zernike F 1964 J. Opt. Soc. Am. 54 1215
[6] Philips R A 1966 J. Opt. Soc. Am. 56 629
[7] Yamazaki M, Ogawa T 1966 J. Opt. Soc. Am. 56 1407
[8] Kirby K W, Deshazer L G 1987 J. Opt. Soc. Am. B 4 1072
[9] De Yoreo J J, Woods B W 1993 J. Appl. Phys. 73 7780
[10] Sun Y, Wang S L, Gu Q T, Xu X G, Ding J X, Liu W J, Liu G X, Zhu S J 2012 Acta Phys. Sin. 61 210203 (in Chinese) [孙云, 王圣来, 顾庆天, 许心光, 丁建旭, 刘文洁, 刘光霞, 朱胜军 2012 61 210203]
[11] Chen J C, Huang Y S, Wei P C 1985 Acta Phys. Sin. 34 377 (in Chinese) [陈金长, 黄伊森, 魏培才 1985 34 377]
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