Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (1): 107-112.DOI: 10.15541/jim20170126

• Orginal Article • Previous Articles    

Solid-state Crystal Growth and Its Application to Fabricate Planar Waveguides

GAN Qi-Jun1,2, JIANG Ben-Xue1, ZHANG Pan-De1,2, JIANG Yi-Guang1,2, YANG Chao3, ZHANG Wen-Chao3, LUO Da-Ping3, LI Wen-Xue3, ZHANG Long1   

  1. 1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. State Key laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
  • Received:2017-03-20 Online:2018-01-23 Published:2017-12-15
  • Supported by:
    National Natural Science Foundation of China (61378069, 61405221)

Abstract:

The effect of different factors, i.e., annealing temperature, grain size, and dopant ion on the solid-state crystal growth (SSCG), was studied in this work. In the SSCG process induced by heat treatment, a single crystal absorbs grains near the bonding interface, forming a robust bond. Using this method, a planar waveguide (PWG) consisting of a core layer of 12at% Yb:YAG polycrystal (100 μm) was fabricated and cladded by two YAG single crystal layers. No Yb3+ ion diffusion was observed. The CW laser performance of the Yb:YAG PWG was investigated. A maximum power of 1.14 W with a slope efficiency of 16.09% was obtained in the plano-plano resonator, and a maximum power of 1.83 W with a slope efficiency of 9.59% was obtained in the three-mirror resonator. A tunable laser with a continuous output between 1027.5 nm and 1033.5 nm was realized.

Key words: solid-state crystal growth, planar waveguide, laser materials

CLC Number: