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    OPTICAL BACKWARD-WAVE OSCILLATOR EMPLOYING SbSI AND PROCESS FOR MAKING CRYSTAL
    1.
    发明授权
    OPTICAL BACKWARD-WAVE OSCILLATOR EMPLOYING SbSI AND PROCESS FOR MAKING CRYSTAL 失效
    使用SbSI的光学后向波振荡器和制造晶体的工艺

    公开(公告)号：US3610945A

    公开(公告)日：1971-10-05

    申请号：US3610945D

    申请日：1970-01-07

    申请人： BELL TELEPHONE LABOR INC

    发明人： BOYD GARY D ,  KURTZ STEWART K ,  NASSAU KURT

    IPC分类号： G02F1/39 ,  H03F7/04

    CPC分类号： G02F1/39

    摘要： A backward-wave parametric oscillator is disclosed in which the active medium is an antimony sulfur iodide (SbSI) single crystal of high resistivity. The crystal is cut into a cubical shape with faces normal to its principal crystalline axes. Preferably, a collinear phase match of two near-infrared forward waves and one backward wave is obtained in the Y-crystalline axis direction, which is a principal axis direction. A strong nonlinear effect is obtained without double refraction. A technique is disclosed for growing SbSI crystals in a special configuration imposing a liquid surface in the path of growth, to circumvent the needleforming growth-rate anisotropy.