Growth of High-quality Yb3+-doped Y3Al5O12 Single Crystal Fiber by Laser Heated Pedestal Growth Method

doi:10.15541/jim20200475

Journal of Inorganic Materials ›› 2021, Vol. 36 ›› Issue (7): 761-765.DOI: 10.15541/jim20200475

• RESEARCH LETTER • Previous Articles Next Articles

Growth of High-quality Yb³⁺-doped Y₃Al₅O₁₂ Single Crystal Fiber by Laser Heated Pedestal Growth Method

DAI Yun¹(), ZHANG Zhonghan¹, SU Liangbi¹, LI Jin², LONG Yong², DING Yuchong², WU Anhua¹()

1. Key Laboratory of Transparent Optical Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
2. No.26 Research Institute of China Electronics Technology Group Corporation, Chongqing 400060, China

Received:2020-08-19 Revised:2020-09-29 Published:2021-07-20 Online:2020-12-01
Contact: WU Anhua, professor. E-mail:wuanhua@mail.sic.ac.cn
About author:戴云(1994-), 男, 硕士研究生. E-mail:daiyuncugb@163.com
Supported by:
Instrument Developing Project of the Chinese Academy of Sciences(YJKYYQ20170019);International Partnership Program of Chinese Academy of Sciences(121631KYSB20180045);National Natural Science Foundation of China(51872309);National Natural Science Foundation of China(U1832106)

Abstract

Abstract:

Single-crystal fiber (SCF) is a fiber-shaped monocrystalline material, which is an important tendency for the development of low-dimensional functional crystals. Combining the excellent optical properties of bulk crystals and the high-efficient thermal dissipation as well as the high beam quality of optical fibers, SCFs are believed to solve the bottlenecks of conventional laser fibers such as unfavorable non-linear effects and poor thermal conductivities, can thus achieve higher laser peak powers and pulse energy. Here, we describe the results of synthesis and characterization of two Yb³⁺-doped Y₃Al₅O₁₂ (Yb:YAG) SCFs (Ф0.2 mm×710 mm), which were grown by a self- developed laser-heated pedestal growth (LHPG) apparatus. The prepared SCFs possess a length-to-diameter ratio greater than 3500, a diameter fluctuation less than 5%, and show high flexibility for bending. The analysis of X-ray rocking curve indicates that the crystallinity of the grown SCF is improved compared with that of the source rod. The EDS line scan shows that the Yb³⁺ ions are uniformly distributed along the axial direction. Results of these characterizations of SCFs indicate that SCFs maintains excellent crystallinity and high optical homogeneity, showing promising candidate for high-power laser applications.

Key words: laser-heated pedestal growth (LHPG), Yb:YAG SCFs, laser crystal

CLC Number:

TQ174

DAI Yun, ZHANG Zhonghan, SU Liangbi, LI Jin, LONG Yong, DING Yuchong, WU Anhua. Growth of High-quality Yb³⁺-doped Y₃Al₅O₁₂ Single Crystal Fiber by Laser Heated Pedestal Growth Method[J]. Journal of Inorganic Materials, 2021, 36(7): 761-765.

Figures/Tables 11

References 24

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No.	Sample	FWHM/(″)
1	1at% Yb:YAG SCF	111.6
2	1at% Yb:YAG source rod	129.6
3	2at% Yb:YAG SCF	111.6
4	2at% Yb:YAG source rod	126.0

No.	Sample	FWHM/(″)
1	1at% Yb:YAG SCF	111.6
2	1at% Yb:YAG source rod	129.6
3	2at% Yb:YAG SCF	111.6
4	2at% Yb:YAG source rod	126.0

Type	Diameter /mm	Length /mm	Uniformity	Concentration distribution	Ref.
Yb:YAG	0.6	150	<2%	√	[16]
Yb:YAG	0.8	Centimeters	-	-	[15]
Yb:Ho:YAG	0.45	124	-	-	[8]
Tm/Yb:YAG	0.8	40	-	√	[19]
Ho:YAG	0.32	280	-	-	[20]
Ho:YAG	0.24	118	-	-	[21]
Nd:YAG	0.6-1.2	300	-	-	[22]
Nd:YAG	1	42	-	-	[23]
Nd:YAG	0.6	25	-	-	[24]

Type	Diameter /mm	Length /mm	Uniformity	Concentration distribution	Ref.
Yb:YAG	0.6	150	<2%	√	[16]
Yb:YAG	0.8	Centimeters	-	-	[15]
Yb:Ho:YAG	0.45	124	-	-	[8]
Tm/Yb:YAG	0.8	40	-	√	[19]
Ho:YAG	0.32	280	-	-	[20]
Ho:YAG	0.24	118	-	-	[21]
Nd:YAG	0.6-1.2	300	-	-	[22]
Nd:YAG	1	42	-	-	[23]
Nd:YAG	0.6	25	-	-	[24]

Growth of High-quality Yb³⁺-doped Y₃Al₅O₁₂ Single Crystal Fiber by Laser Heated Pedestal Growth Method

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