Large-size Ho:Tm:YLF crystal grown by the Czochralski method

Xiaoming Ma; Yongguo Wang; Baoquan Yao; Yanjun Cui; Xiaogang Mo

doi:10.3788/CJL201138.s106003

Large-size Ho:Tm:YLF crystal grown by the Czochralski method

Xiaoming Ma
, Yongguo Wang
, Baoquan Yao
, Yanjun Cui
, Xiaogang Mo^*

^*Corresponding author for this work

School of Astronautics

Beijing Opto-Electronics Technology Co. Ltd.
Beijing University of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The causes of the floating-debris on the surface of Ho:Tm:YLF melt, the scattering particles and the crack of Ho:Tm:YLF crystal during the Czochralski growth are analyzed in this paper. Through elaborately designing of the symmetry temperature field, and adjusting temperature gradient and the crystal growth process parameters, the scattering particles and the crack of the crystal are eliminated effectively. The growth atmosphere with a certain volume CF ₄ contributes to decreasing the floating-debris on the melt surface effectively, and the influence of the floating-debris on the normal crystal growth are overcome. By above technique ways, high-quality Ho:Tm:YLF crystals with the size of φ(25-30) mm×(100-120) mm are grown. The laser performance test of Ho:Tm:YLF crystal shows that under LD double-end-pumped conditions more than 10 W laser at 2.05 μm is achieved, and the laser slope efficiency reaches 41.2%, optical-to-optical efficiency reaches 36.4%.

Original language	English
Pages (from-to)	s106003-1-s106003-4
Journal	Zhongguo Jiguang/Chinese Journal of Lasers
Volume	38
Issue number	SUPPL. 1
DOIs	https://doi.org/10.3788/CJL201138.s106003
State	Published - Dec 2011

Keywords

Crystal growth
Czochralski method
Ho:Tm:YLF crystal
Laser crystal
Laser performance
Materials

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10.3788/CJL201138.s106003

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@article{70fadf0c16184c0f8d3a38b0bbb75a65,

title = "Large-size Ho:Tm:YLF crystal grown by the Czochralski method",

abstract = "The causes of the floating-debris on the surface of Ho:Tm:YLF melt, the scattering particles and the crack of Ho:Tm:YLF crystal during the Czochralski growth are analyzed in this paper. Through elaborately designing of the symmetry temperature field, and adjusting temperature gradient and the crystal growth process parameters, the scattering particles and the crack of the crystal are eliminated effectively. The growth atmosphere with a certain volume CF 4 contributes to decreasing the floating-debris on the melt surface effectively, and the influence of the floating-debris on the normal crystal growth are overcome. By above technique ways, high-quality Ho:Tm:YLF crystals with the size of φ(25-30) mm×(100-120) mm are grown. The laser performance test of Ho:Tm:YLF crystal shows that under LD double-end-pumped conditions more than 10 W laser at 2.05 μm is achieved, and the laser slope efficiency reaches 41.2\%, optical-to-optical efficiency reaches 36.4\%.",

keywords = "Crystal growth, Czochralski method, Ho:Tm:YLF crystal, Laser crystal, Laser performance, Materials",

author = "Xiaoming Ma and Yongguo Wang and Baoquan Yao and Yanjun Cui and Xiaogang Mo",

year = "2011",

month = dec,

doi = "10.3788/CJL201138.s106003",

language = "英语",

volume = "38",

pages = "s106003--1--s106003--4",

journal = "Zhongguo Jiguang/Chinese Journal of Lasers",

issn = "0258-7025",

publisher = "Chinese Laser Press",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Large-size Ho:Tm:YLF crystal grown by the Czochralski method

AU - Ma, Xiaoming

AU - Wang, Yongguo

AU - Yao, Baoquan

AU - Cui, Yanjun

AU - Mo, Xiaogang

PY - 2011/12

Y1 - 2011/12

N2 - The causes of the floating-debris on the surface of Ho:Tm:YLF melt, the scattering particles and the crack of Ho:Tm:YLF crystal during the Czochralski growth are analyzed in this paper. Through elaborately designing of the symmetry temperature field, and adjusting temperature gradient and the crystal growth process parameters, the scattering particles and the crack of the crystal are eliminated effectively. The growth atmosphere with a certain volume CF 4 contributes to decreasing the floating-debris on the melt surface effectively, and the influence of the floating-debris on the normal crystal growth are overcome. By above technique ways, high-quality Ho:Tm:YLF crystals with the size of φ(25-30) mm×(100-120) mm are grown. The laser performance test of Ho:Tm:YLF crystal shows that under LD double-end-pumped conditions more than 10 W laser at 2.05 μm is achieved, and the laser slope efficiency reaches 41.2%, optical-to-optical efficiency reaches 36.4%.

AB - The causes of the floating-debris on the surface of Ho:Tm:YLF melt, the scattering particles and the crack of Ho:Tm:YLF crystal during the Czochralski growth are analyzed in this paper. Through elaborately designing of the symmetry temperature field, and adjusting temperature gradient and the crystal growth process parameters, the scattering particles and the crack of the crystal are eliminated effectively. The growth atmosphere with a certain volume CF 4 contributes to decreasing the floating-debris on the melt surface effectively, and the influence of the floating-debris on the normal crystal growth are overcome. By above technique ways, high-quality Ho:Tm:YLF crystals with the size of φ(25-30) mm×(100-120) mm are grown. The laser performance test of Ho:Tm:YLF crystal shows that under LD double-end-pumped conditions more than 10 W laser at 2.05 μm is achieved, and the laser slope efficiency reaches 41.2%, optical-to-optical efficiency reaches 36.4%.

KW - Crystal growth

KW - Czochralski method

KW - Ho:Tm:YLF crystal

KW - Laser crystal

KW - Laser performance

KW - Materials

UR - https://www.scopus.com/pages/publications/84863027879

U2 - 10.3788/CJL201138.s106003

DO - 10.3788/CJL201138.s106003

M3 - 文章

AN - SCOPUS:84863027879

SN - 0258-7025

VL - 38

SP - s106003-1-s106003-4

JO - Zhongguo Jiguang/Chinese Journal of Lasers

JF - Zhongguo Jiguang/Chinese Journal of Lasers

IS - SUPPL. 1

ER -

Large-size Ho:Tm:YLF crystal grown by the Czochralski method

Abstract

Keywords

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