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Proceedings Paper

Micro-pulling-down furnace modification and single crystal fibers growth
Author(s): Dongsheng Yuan; Zhitai Jia; Yang Li; Baiyi Wu; Xutang Tao
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Paper Abstract

Single crystal fiber (SCF) combines the excellent instinct properties of conventional bulk laser crystals, and the special geometry advantage of active optical fibers. YAG and LuAG are proper host candidates for single crystal fiber laser with high thermal conductivity. Despite a lower thermal conductivity for pure crystal than YAG, LuAG crystal is easier to obtain homogeneous optical quality, and has a thermal conductivity nearly independent from the doping level. Micropulling- down (μ-PD) has relatively small thermal gradient, and here we use μ-PD to carry out high quality SCFs. Through the μ-PD furnace manufactured by ourselves, crystal fibers with different diameters have been grown successfully. We designed and fabricated a method to adjust the thermal distribution, and with the favor of pulling-down rate, the specific diameter can be controlled perfectly. The crystalline quality and homogeneity along the whole fiber were investigated, and LuAG SCF was confirmed to have a fine crystal quality for laser.

Paper Details

Date Published: 16 March 2016
PDF: 8 pages
Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 97260E (16 March 2016); doi: 10.1117/12.2211220
Show Author Affiliations
Dongsheng Yuan, Shandong Univ. (China)
Zhitai Jia, Shandong Univ. (China)
Yang Li, Shandong Univ. (China)
Baiyi Wu, Shandong Univ. (China)
Xutang Tao, Shandong Univ. (China)

Published in SPIE Proceedings Vol. 9726:
Solid State Lasers XXV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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