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Growth method of large size non-core YAG series laser crystal

A laser crystal and growth method technology, applied in crystal growth, single crystal growth, single crystal growth, etc., can solve the problems of difficult to obtain, low crystal utilization rate, high cost, etc., and achieve coreless, low cost, and short growth cycle Effect

Active Publication Date: 2011-02-16
成都东骏激光股份有限公司
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Problems solved by technology

[0002] Regarding the growth technology of YAG series laser crystals, the induction heating iridium crucible pulling method is generally used abroad to grow crystals with high melting point on the convex interface. The crystals grown by this growth technology have cores, so the crystal utilization rate is low, the cost is high, and the diameter is difficult to obtain High quality laser crystal products larger than 30mm
Since the 1970s in China, the research on the growth technology of YAG series laser crystals with convex interface and flat interface has been carried out in China, and some breakthroughs have been obtained. In terms of average power development, it is required to provide a core-free high-concentration YAG series laser crystal with a diameter greater than 30mm

Method used

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  • Growth method of large size non-core YAG series laser crystal
  • Growth method of large size non-core YAG series laser crystal

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Embodiment Construction

[0026] Such as figure 1 As shown, a large-size coreless YAG series laser crystal growth device includes a tray 15 connected to the electrode plate 16 through an alumina gasket 19, and molybdenum side insulation screens 10, 11, 12 placed on the tray 15, molybdenum Molybdenum upper insulation screens 5, 6, and 7 are arranged on the upper ends of the side insulation screens 10, 11, and 12, and a resistance heater 13 is installed on the inner side of the molybdenum side insulation screen 12, and the resistance heater 13 is directly connected with the electrode plate 16, and the molybdenum crucible holder 9 passes through The graphite joint 18 is connected with the lower transmission system of the single crystal furnace, a molybdenum table cover 17 is arranged between the graphite joint 18 and the molybdenum crucible holder 9, and the molybdenum crucible 8 is provided on the molybdenum crucible holder 9, and the molybdenum crucible 8 is equipped with a melt 4, The diameter of the m...

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Abstract

The invention discloses a grower and a growing method of a laser crystal that belongs to YAS series with large size and no core, which belongs to the crystallization technology of the laser crystal. The invention comprises the grower adopting a Mo crucible pulling method heated by resistance and the crystal growing method comprising two procedures and four phases. The laser crystal of YAS series provided by the invention has large size of 35 to 50mm, high concentration (reaching 2.0at percent), no core, no dislocation and no scattering. In addition, the growing technology is stable; growing cycle is short; cost is low; and the yield of the crystal is high with above 85 percent.

Description

technical field [0001] The invention relates to the field of laser crystal crystallization technology. Background technique [0002] Regarding the growth technology of YAG series laser crystals, the induction heating iridium crucible pulling method is generally used abroad to grow crystals with high melting point on the convex interface. The crystals grown by this growth technology have cores, so the crystal utilization rate is low, the cost is high, and the diameter is difficult to obtain High-quality laser crystal products larger than 30mm. Since the 1970s in China, the research on the growth technology of YAG series laser crystals with convex interface and flat interface has been carried out in China, and some breakthroughs have been obtained. In terms of average power development, it is required to provide a core-free high-concentration YAG series laser crystal with a diameter greater than 30mm. Contents of the invention [0003] The purpose of the present invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/28C30B15/00
Inventor 周世斌汤海涛罗文科宋玉玲
Owner 成都东骏激光股份有限公司
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