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    • 10. 发明授权
    • Multiform crystal and apparatus for fabrication
    • 多晶体和制造装置
    • US5394420A
    • 1995-02-28
    • US190347
    • 1994-01-27
    • Robert H. SennLoren E. Record
    • Robert H. SennLoren E. Record
    • C30B29/10C30B29/12C30B29/14C30B29/22C30B29/42C30B29/48C30B33/00H01L31/10H01S3/07H01S3/08H01S3/16H01S3/14
    • C30B29/40C30B29/14C30B29/48C30B33/00H01S3/07H01S3/0612H01S3/16
    • A multiform crystal 10 suitable for laser applications is described. The multiform crystal 10 comprises at least two single crystal segments 12 fused together with a joint 14 therebetween, the joint being substantially optically transparent to light propagating through the crystal 10. The multiform crystal 10 is formed by polishing two single crystal segments 12 to form at least one optically flat face on each segment. The polished faces are cleaned and contacted against one another to form a joint 14 between the crystal segments 12. Substantially all the oxygen in the joint 14 is removed. The joint 14 is maintained at a sufficiently high temperature and pressure to join the segments 12 together at the joint forming the substantially optically transparent joint 14. Mounting fixtures suitable for holding the crystal segments 12 firmly against one another in a furnace, without causing undesirable thermal expansive forces to be exerted on the segments 12, are also described. The temperature cycle used to fuse crystal segments can also be used to heat treat laser single crystals to remove substantially all the contaminants and lattice defects in the crystal, providing higher light amplification properties in the crystal.
    • 描述适用于激光应用的多晶体10。 多晶体10包括至少两个与其间的接头14熔合在一起的单晶片段12,该接合部对于通过晶体10传播的光基本上是光学透明的。多晶体10通过抛光两个单晶片段12而形成 每个片段上至少有一个光学平面。 抛光的表面被清洁并彼此接触以在晶体段12之间形成接头14.基本上所有的接头14中的氧被去除。 接头14保持在足够高的温度和压力下,以在形成基本上光学透明的接头14的接头处将节段12连接在一起。安装固定件适于将晶体段12牢固地保持在炉中彼此之间,而不引起不期望的热 还描述了施加在段12上的膨胀力。 用于熔合晶体段的温度循环也可以用于热处理激光单晶,以消除晶体中的基本上所有的污染物和晶格缺陷,从而在晶体中提供较高的光放大特性。