公开(公告)号：WO1985001523A1

公开(公告)日：1985-04-11

申请号：PCT/US1984001065

申请日：1984-07-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HARRINGTON, James, A. ,  PASTOR, Antonio, C. ,  STANDLEE, Arlie, G. ,  TURK, Roger, R.

IPC: C30B13/00

CPC classification number: C30B13/005 ,  C30B13/00 ,  C30B29/12 ,  C30B29/62

Abstract: Method for conversion of congruently melting polycrystalline fibers to single crystal fibers. The method is particularly useful for production of fibers ranging from about 30 mu m to about 1,000 mu m in diameter, which are capable of infrared (IR) transmission and of functioning in nonlinear optical applications. The polycrystalline fiber is converted to a single crystal fiber by creating a melt zone near one end of said polycrystalline fiber and then causing said melt zone to travel a length of said polycrystalline fiber at least once, so that the fiber continuously melts and recrystallizes into a single crystal along the length so that such length becomes one continuous crystal. In another embodiment of the invention, the method described above is utilized to improve the surface characteristics of a single crystal. In yet another embodiment of the invention, the method disclosed above is utilized to produce a fiber comprised of a polycrystalline core surrounded by a single crystal sleeve or large grained crystal sleeve which evidences single crystal behavior. This method is particularly useful for production of fibers ranging from about 30 mu m about to 1,000 mu m in diameter, which are capable of infrared (IR) transmission. If the sleeve is a sufficiently large proportion of the fiber produced, this method is particularly useful for production of fibers which may be capable of functioning in nonlinear optical applications.

Abstract translation: 将一致熔化的多晶纤维转化为单晶纤维的方法。 该方法对于生产直径约30μm至约1,000μm的纤维特别有用，其能够进行红外（IR）传输并且在非线性光学应用中起作用。 多晶纤维通过在所述多晶纤维的一端附近形成熔融区而转化为单晶纤维，然后使所述熔融区至少行进一段长度的所述多晶纤维，使得纤维连续熔融并重结晶成 单晶长度使得这种长度变成一个连续的晶体。 在本发明的另一个实施方案中，利用上述方法来改善单晶的表面特性。 在本发明的另一个实施例中，上述方法用于制造由单晶套筒或大颗粒晶体套筒围绕的多晶核心构成的纤维，其证明单晶行为。 该方法对于生产可以进行红外（IR）传输的直径为约30μm至约1,000μm的纤维特别有用。 如果套筒是足够大比例的纤维，则该方法对于可以在非线性光学应用中起作用的纤维的生产特别有用。

公开(公告)号：EP0156812A1

公开(公告)日：1985-10-09

申请号：EP84902757.0

申请日：1984-07-06

Applicant: Hughes Aircraft Company

Inventor： HARRINGTON, James, A. ,  PASTOR, Antonio, C. ,  STANDLEE, Arlie, G. ,  TURK, Roger, R.

IPC: C30B13 ,  C30B29

CPC classification number: C30B13/005 ,  C30B13/00 ,  C30B29/12 ,  C30B29/62

Abstract: This invention provides a method for conversion of congruently melting polycrystalline fibers to single crystal fibers. The method is particularly useful for production of fibers ranging from about 30 mu m to about 1,000 mu m in diameter, which are capable of infrared (IR) transmission and of functioning in nonlinear optical applications. The polycrystalline fiber is converted to a single crystal fiber by creating a melt zone near one end of said polycrystalline fiber and then causing said melt zone to travel a length of said polycrystalline fiber at least once, so that the fiber continuously melts and recrystallizes into a single crystal along the length so that such length becomes one continuous crystal. In another embodiment of the invention, the method described above is utilized to improve the surface characteristics of a single crystal. In yet another embodiment of the invention, the method disclosed above is utilized to produce a fiber comprised of a polycrystalline core surrounded by a single crystal sleeve or large grained crystal sleeve which evidences single crystal behavior. This method is particularly useful for production of fibers ranging from about 30 mu m to 1,000 mu m in diameter, which are capable of infrared (IR) transmission. If the sleeve is a sufficiently large proportion of the fiber produced, this method is particularly useful for production of fibers which may be capable of functioning in nonlinear optical applications.

公开(公告)号：EP0156812B1

公开(公告)日：1987-09-23

申请号：EP84902757.8

申请日：1984-07-06

Applicant: Hughes Aircraft Company

Inventor： HARRINGTON, James, A. ,  PASTOR, Antonio, C. ,  STANDLEE, Arlie, G. ,  TURK, Roger, R.

IPC: C30B13/00 ,  C30B29/62 ,  C30B13/06 ,  C30B29/12

CPC classification number: C30B13/005 ,  C30B13/00 ,  C30B29/12 ,  C30B29/62

Abstract: This invention provides a method for conversion of congruently melting polycrystalline fibers to single crystal fibers. The method is particularly useful for production of fibers ranging from about 30 mu m to about 1,000 mu m in diameter, which are capable of infrared (IR) transmission and of functioning in nonlinear optical applications. The polycrystalline fiber is converted to a single crystal fiber by creating a melt zone near one end of said polycrystalline fiber and then causing said melt zone to travel a length of said polycrystalline fiber at least once, so that the fiber continuously melts and recrystallizes into a single crystal along the length so that such length becomes one continuous crystal. In another embodiment of the invention, the method described above is utilized to improve the surface characteristics of a single crystal. In yet another embodiment of the invention, the method disclosed above is utilized to produce a fiber comprised of a polycrystalline core surrounded by a single crystal sleeve or large grained crystal sleeve which evidences single crystal behavior. This method is particularly useful for production of fibers ranging from about 30 mu m to 1,000 mu m in diameter, which are capable of infrared (IR) transmission. If the sleeve is a sufficiently large proportion of the fiber produced, this method is particularly useful for production of fibers which may be capable of functioning in nonlinear optical applications.