Chinese Journal of Quantum Electronics ›› 2021, Vol. 38 ›› Issue (2): 214-218.

• Special Issue on Advanced Optical Crystal • Previous Articles     Next Articles

Development of laser-heated pedestal growth apparatus and single-crystal fiber growth

DAI Yun1;2, ZHANG Zhonghan1, WANG Xibin1;2, LI Jin3, LONG Yong3, SU Liangbi1;2, DING Yuchong3, WU Anhua1;2∗   

  1. 1 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China; 2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; 3 No.26 Research Institute of China Electronics Technology Group Corporation, Chongqing 400060, China
  • Received:2020-11-30 Revised:2020-12-25 Published:2021-03-28 Online:2021-03-29

Abstract: Single-crystal fiber (SCF) is a new type of one-dimensional crystal material that combines the advantages of bulk crystal and glass fiber. It has excellent physicochemical and thermal management properties, and has huge application potential in laser, scintillation, and sensing. At present, the two main growth methods of SCFs are micro-pulling down (-PD) method and laser heated pedestal growth (LHPG) method. The LHPG method does not need crucible in the growth process and the SCFs with smaller diameter can be prepared to give full play to the morphological advantage of the fiber. Therefore, the LHPG SCF apparatus with independent intellectual property rights is developed, and Al2O3, YAG, LuAG and other SCFs are grown. The diameter of the YAG SCF can reach 200 m, the length is 710 mm, and the aspect ratio is more than 3500:1. At the same time, the diameter uniformity and crystallization quality of the SCF are investigated, which shows that the quasi-one-dimensional SCF still has good physicochemical properties.

Key words: fiber optics, single crystal fiber, laser heated pedestal growth, fiber quality

CLC Number: