Study of the near-field modulation property of microwaviness on a KH2PO4 crystal surface

doi:10.1088/1674-1056/19/6/064203

Abstract The KH$_2$PO$_4$ crystal is a key component in optical systems of inertial confinement fusion (ICF). The microwaviness on a KH$_2$PO$_4$ crystal surface is strongly related to its damage threshold which is a key parameter for application. To study the laser induced damage mechanism caused by microwaviness, in this paper the near-field modulation properties of microwaviness to the incident wave are discussed by the Fourier modal method. Research results indicate that the microwaviness on the machined surface will distort the incident wave and thus lead to non-uniform distribution of the light intensity inside the crystal; in a common range of microwaviness amplitude, the light intensity modulation degree increases about 0.03 whenever the microwaviness amplitude increases 10 nm; 1 order diffraction efficiencies are the key factors responsible for light intensity modulation inside the crystal; the light intensity modulation is just around the microwaviness in the form of an evanescent wave, not inside the crystal when the microwaviness period is below 0.712 $\mu$m; light intensity modulation degree has two extreme points in microwaviness periods of 1.064 $\mu$m and 1.6 $\mu$m, remains unchanged between periods of 3 $\mu$m and 150 $\mu$m, and descends above the period of 150 $\mu$m to 920 $\mu$m.

Keywords: KH₂PO₄ crystal laser induced damage threshold microwaviness Fourier modal method modulation degree

Accepted manuscript online:

PACS:	78.70.Gq	(Microwave and radio-frequency interactions)
	77.22.Ch	(Permittivity (dielectric function))

Fund: Project supported by the National Natural Science Foundation of China (Grant No.~50875066) and the National High Technology Research and Development Program of China (Grant No.~2009AA044305).

Cite this article:

Chen Ming-Jun(陈明君), Jiang Wei(姜伟), Li Ming-Quan(李明全), and Chen Kuan-Neng(陈宽能) Study of the near-field modulation property of microwaviness on a KH₂PO₄ crystal surface 2010 Chin. Phys. B 19 064203

[1]	Xia Z L, Shao J D and Fan Z X 2007 Acta Phys. Sin. 56 400 (in Chinese)
[2]	Negres R A, Kucheyev S O, DeMange P, Bostedt C, Buuren T V, Nelson A J and Demos S G 2005 Appl. Phys. Lett. 86 171107
[3]	Diao L C, Zhang K C and Chang X A 2002 J. Synth. Cryst. 31 99 (in Chinese)
[4]	Tang Z Y, Yang J L, Wen S H, Wang G X, Guo Y Z, Yang H Q and Ma C 1999 Chin. Phys. 8 913
[5]	Carr C W, Feit M D, Johnson M A and Rubenchik A M 2006 Appl. Phys. Lett. 89 131901
[6]	DeMange P, Negres R A, Radousky H B and Demos S G 2006 Opt. Engin. 45 104205
[7]	Zhang H Y, Lu Z Z, Fan R W and Chen D Y 2008 Chin. Phys. B 17 4504
[8]	Yang L 2001 Advanced Optical Manufacturing Technology (Beijing: Science Press) pp.~272--294 (in Chinese)
[9]	Chen M J, Pang Q L, Wang J H and Cheng K 2008 International Journal of Machine Tools {\& Manufacture 48 905
[10]	Gao F H, Wang C C, Tang X G, Ma C, Cui Z and Guo Y K 2006 Microelectronic Engineering 83 1062
[11]	Kong W J, Yun M J, Sun X, Liu J H, Fan Z X and Shao J D 2008 Acta Phys. Sin. 57 4904 (in Chinese)
[12]	Yao X, Gao F H, Li J F, Zhang Y X, Wen S L and Guo Y K 2008 Acta Phys. Sin. 57 4891 (in Chinese)
[13]	Liu M M, Zhang G P and Zhou M 2006 Acta Phys. Sin. 55 4608 (in Chinese)
[14]	Yao X, Gao F H, Wen S L, Zhang Y X, Li J F and Guo Y K 2007 Acta Phys. Sin. 56 6945 (in Chinese)
[15]	Li L F 1998 J. Opt. Soc. Am. A 13 1313
[16]	Bayanheshig, Qi X D and Tang Y G 2003 Acta Phys. Sin. 52 1157 (in Chinese)
[17]	Thomas Hagen 2005 Nonlinear Analysis: Real World Applications 6 429
[18]	Fu K X, Wang Z H, Zhang D Y, Zhang J and Zhang Q Z 1999 Sci. Chin. Ser. A 42 636
[19]	Fu K X, Zhang D Y, Wang Z H, Zhang Q Z and Zhang J 1998 Acta Phys. Sin. 47 1278 (in Chinese)
[20]	DeMange P, Negres R A, Carr C W, Radousky H B and Demos S G 2006 Opt. Express 14 5313
[21]	Chen M J, Wang J H, Liang Y C and Yuan D Y 2007 Key Engineering Material s 339 1
[22]	Wang J H, Chen M J, Dong S, Wang H X, Zhang J H and Zong W J 2007 Key Engineering Materials 329 409
[23]	Wang J H, Dong S, Wang H X, Chen M J, Zong W J and Zhang L J 2007 Key Engineering Materials 339 78

[1]	Improvement of laser damage thresholds of fused silica by ultrasonic-assisted hydrofluoric acid etching Yuan Li(李源), Hongwei Yan(严鸿维), Ke Yang(杨科), Caizhen Yao(姚彩珍), Zhiqiang Wang(王志强), Chunyan Yan(闫春燕), Xinshu Zou(邹鑫书), Xiaodong Yuan(袁晓东), Liming Yang(杨李茗), Xin Ju(巨新). Chin. Phys. B, 2017, 26(11): 118104.
[2]	The influence of smoothing by spectral dispersion on the beam characteristics in the near field Fan Xin-Min (樊心民), Lü Zhi-Wei (吕志伟), Lin Dian-Yang (林殿阳), Wang Yu-Lei (王雨雷). Chin. Phys. B, 2013, 22(10): 104210.
[3]	Study of modulation property to incident laser by surface micro-defects on KH₂PO₄ crystal Chen Ming-Jun(陈明君), Cheng Jian(程健), Li Ming-Quan(李明全), and Xiao Yong(肖勇) . Chin. Phys. B, 2012, 21(6): 064212.
[4]	Mechanism of micro-waviness induced KH₂PO₄ crystal laser damage and the corresponding vibration source Li Ming-Quan(李明全), Chen Ming-Jun(陈明君), An chen-Hui(安晨辉), Zhou Lian(周炼), Cheng Jian(程健), Xiao Yong(肖勇), and Jiang Wei(姜伟) . Chin. Phys. B, 2012, 21(5): 050301.
[5]	Formation energies and electronic structures of native point defects in potassium dihydrogen phosphate Wang Kun-Peng(王坤鹏) and Huang Ye(黄烨) . Chin. Phys. B, 2011, 20(7): 077401.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Study of the near-field modulation property of microwaviness on a KH2PO4 crystal surface

Cite this article:

Online attention

Study of the near-field modulation property of microwaviness on a KH₂PO₄ crystal surface