Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface

Hao Yang; Jian Cheng; Mingjun Chen; Qi Liu; Zhichao Liu; Jian Wang; Qiao Xu

doi:10.1117/12.2504919

Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface

Hao Yang, Jian Cheng, Mingjun Chen, Qi Liu, Zhichao Liu, Jian Wang, Qiao Xu

Design, Manufacturing And Engineering Management

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

3 Citations (Scopus)

Abstract

Micro-machining has been proved the most effective method to mitigate the laser-induced surface damage growth on potassium dihydrogen phosphate (KDP) crystal in high power laser systems. However, the phase contrast of outgoing laser beam, introduced by the mitigated KDP surface, would cause light propagating turbulence and downstream intensification with the potential to damage downstream optics. In this work, a Gaussian mitigation pit with width of 800μm and depth of 10μm is fabricated on KDP rear surface by micro-milling. The effect of the mitigation pit on downstream light intensification is analyzed through propagation calculations based on Fresnel diffraction integral theory. The light intensity modulations reach a peak value at the position of 10mm downstream from the rear surface, decrease sharply subsequently and get stable eventually. The results indicate that the modulations induced by Gaussian mitigation pits would change with various downstream locations. It is essential to notice the unacceptable downstream intensification and reduce the risk of laser damage on other optics by choosing an appropriate installation location.

Original language	English
Title of host publication	9th International Symposium on Advanced Optical Manufacturing and Testing Technologies
Subtitle of host publication	Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics
Editors	Xiangang Luo, Mingbo Pu, Bin Fan, Reinhart Poprawe, Xiong Li, Min Gu
Number of pages	7
Volume	10840
ISBN (Electronic)	9781510623224
DOIs	https://doi.org/10.1117/12.2504919
Publication status	Published - 24 Jan 2019
Event	9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics - Chengdu, China Duration: 26 Jun 2018 → 29 Jun 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10840
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics
Country/Territory	China
City	Chengdu
Period	26/06/18 → 29/06/18

Funding

This work was sponsored by the National Natural Science Foundation of China (No. 51775147, No. 51705105), Science Challenge Project (No. TZ2016006-0503-01), China Postdoctoral Science Foundation funded project (No. 2017M621260), Heilongjiang Postdoctoral Fund (No. LBH-Z17090) and Self-Planned Task (No. SKLRS201718A) of State Key Laboratory of Robotics and System (HIT).

Keywords

KDP
laser-induced damage
micro-milling
mitigation
modulation
crystals
diffraction
optical components

Access to Document

10.1117/12.2504919

Cite this

Yang, H., Cheng, J., Chen, M., Liu, Q., Liu, Z., Wang, J., & Xu, Q. (2019). Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface. In X. Luo, M. Pu, B. Fan, R. Poprawe, X. Li, & M. Gu (Eds.), 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics (Vol. 10840). Article 108400W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10840). https://doi.org/10.1117/12.2504919

Yang, Hao ; Cheng, Jian ; Chen, Mingjun et al. / Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface. 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics. editor / Xiangang Luo ; Mingbo Pu ; Bin Fan ; Reinhart Poprawe ; Xiong Li ; Min Gu. Vol. 10840 2019. (Proceedings of SPIE - The International Society for Optical Engineering).

@inproceedings{4646406009244658b365b7fa2c4b1376,

title = "Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface",

abstract = "Micro-machining has been proved the most effective method to mitigate the laser-induced surface damage growth on potassium dihydrogen phosphate (KDP) crystal in high power laser systems. However, the phase contrast of outgoing laser beam, introduced by the mitigated KDP surface, would cause light propagating turbulence and downstream intensification with the potential to damage downstream optics. In this work, a Gaussian mitigation pit with width of 800μm and depth of 10μm is fabricated on KDP rear surface by micro-milling. The effect of the mitigation pit on downstream light intensification is analyzed through propagation calculations based on Fresnel diffraction integral theory. The light intensity modulations reach a peak value at the position of 10mm downstream from the rear surface, decrease sharply subsequently and get stable eventually. The results indicate that the modulations induced by Gaussian mitigation pits would change with various downstream locations. It is essential to notice the unacceptable downstream intensification and reduce the risk of laser damage on other optics by choosing an appropriate installation location.",

keywords = "KDP, laser-induced damage, micro-milling, mitigation, modulation, crystals, diffraction, optical components",

author = "Hao Yang and Jian Cheng and Mingjun Chen and Qi Liu and Zhichao Liu and Jian Wang and Qiao Xu",

note = "Funding Information: This work was sponsored by the National Natural Science Foundation of China (No. 51775147, No. 51705105), Science Challenge Project (No. TZ2016006-0503-01), China Postdoctoral Science Foundation funded project (No. 2017M621260), Heilongjiang Postdoctoral Fund (No. LBH-Z17090) and Self-Planned Task (No. SKLRS201718A) of State Key Laboratory of Robotics and System (HIT). Publisher Copyright: {\textcopyright} 2019 SPIE.; 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics ; Conference date: 26-06-2018 Through 29-06-2018",

year = "2019",

month = jan,

day = "24",

doi = "10.1117/12.2504919",

language = "English",

volume = "10840",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

editor = "Xiangang Luo and Mingbo Pu and Bin Fan and Reinhart Poprawe and Xiong Li and Min Gu",

booktitle = "9th International Symposium on Advanced Optical Manufacturing and Testing Technologies",

}

Yang, H, Cheng, J, Chen, M, Liu, Q, Liu, Z, Wang, J & Xu, Q 2019, Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface. in X Luo, M Pu, B Fan, R Poprawe, X Li & M Gu (eds), 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics. vol. 10840, 108400W, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10840, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics, Chengdu, China, 26/06/18. https://doi.org/10.1117/12.2504919

Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface. / Yang, Hao; Cheng, Jian; Chen, Mingjun et al.
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics. ed. / Xiangang Luo; Mingbo Pu; Bin Fan; Reinhart Poprawe; Xiong Li; Min Gu. Vol. 10840 2019. 108400W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10840).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface

AU - Yang, Hao

AU - Cheng, Jian

AU - Chen, Mingjun

AU - Liu, Qi

AU - Liu, Zhichao

AU - Wang, Jian

AU - Xu, Qiao

N1 - Funding Information: This work was sponsored by the National Natural Science Foundation of China (No. 51775147, No. 51705105), Science Challenge Project (No. TZ2016006-0503-01), China Postdoctoral Science Foundation funded project (No. 2017M621260), Heilongjiang Postdoctoral Fund (No. LBH-Z17090) and Self-Planned Task (No. SKLRS201718A) of State Key Laboratory of Robotics and System (HIT). Publisher Copyright: © 2019 SPIE.

PY - 2019/1/24

Y1 - 2019/1/24

N2 - Micro-machining has been proved the most effective method to mitigate the laser-induced surface damage growth on potassium dihydrogen phosphate (KDP) crystal in high power laser systems. However, the phase contrast of outgoing laser beam, introduced by the mitigated KDP surface, would cause light propagating turbulence and downstream intensification with the potential to damage downstream optics. In this work, a Gaussian mitigation pit with width of 800μm and depth of 10μm is fabricated on KDP rear surface by micro-milling. The effect of the mitigation pit on downstream light intensification is analyzed through propagation calculations based on Fresnel diffraction integral theory. The light intensity modulations reach a peak value at the position of 10mm downstream from the rear surface, decrease sharply subsequently and get stable eventually. The results indicate that the modulations induced by Gaussian mitigation pits would change with various downstream locations. It is essential to notice the unacceptable downstream intensification and reduce the risk of laser damage on other optics by choosing an appropriate installation location.

AB - Micro-machining has been proved the most effective method to mitigate the laser-induced surface damage growth on potassium dihydrogen phosphate (KDP) crystal in high power laser systems. However, the phase contrast of outgoing laser beam, introduced by the mitigated KDP surface, would cause light propagating turbulence and downstream intensification with the potential to damage downstream optics. In this work, a Gaussian mitigation pit with width of 800μm and depth of 10μm is fabricated on KDP rear surface by micro-milling. The effect of the mitigation pit on downstream light intensification is analyzed through propagation calculations based on Fresnel diffraction integral theory. The light intensity modulations reach a peak value at the position of 10mm downstream from the rear surface, decrease sharply subsequently and get stable eventually. The results indicate that the modulations induced by Gaussian mitigation pits would change with various downstream locations. It is essential to notice the unacceptable downstream intensification and reduce the risk of laser damage on other optics by choosing an appropriate installation location.

KW - KDP

KW - laser-induced damage

KW - micro-milling

KW - mitigation

KW - modulation

KW - crystals

KW - diffraction

KW - optical components

UR - http://www.scopus.com/inward/record.url?scp=85061309203&partnerID=8YFLogxK

U2 - 10.1117/12.2504919

DO - 10.1117/12.2504919

M3 - Conference contribution book

AN - SCOPUS:85061309203

VL - 10840

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies

A2 - Luo, Xiangang

A2 - Pu, Mingbo

A2 - Fan, Bin

A2 - Poprawe, Reinhart

A2 - Li, Xiong

A2 - Gu, Min

T2 - 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics

Y2 - 26 June 2018 through 29 June 2018

ER -

Yang H, Cheng J, Chen M, Liu Q, Liu Z, Wang J et al. Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface. In Luo X, Pu M, Fan B, Poprawe R, Li X, Gu M, editors, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics. Vol. 10840. 2019. 108400W. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2504919

Downstream light intensification induced by Gaussian mitigation pits using micro-milling on rear KDP surface

Abstract

Publication series

Conference

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this