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    • 37. 发明授权
    • Method for producing hologram by pico-second laser
    • 通过微秒级激光产生全息图的方法
    • US07428085B2
    • 2008-09-23
    • US10504634
    • 2003-02-13
    • Hideo HosonoMasahiro HiranoKenichi KawamuraTaisuke MiuraHayato Kamioka
    • Hideo HosonoMasahiro HiranoKenichi KawamuraTaisuke MiuraHayato Kamioka
    • G03H1/02
    • G02B5/1857G02B17/023G03H1/0244G03H1/04G03H2001/0413G03H2001/0415G03H2001/0482G03H2001/0484G03H2001/0491G03H2222/33G03H2223/26G03H2240/24G03H2260/62G03H2270/13G03H2270/52
    • Disclosed is a method of producing a hologram through a two-beam laser interfering exposure process, which comprises emitting a coherent laser light with a pulse width (τ) ranging from greater than 900 femtoseconds to 100 picoseconds and a laser power of 10 μJ/pulse or more using a solid-state laser as a light source, dividing the pulses light from the laser into two beams, controlling the two beams temporally and spatially in such a manner that the two beam are converged on a surface of or inside a workpiece for recording a hologram while matching the respective converged spots of the two beams with one another temporally and spatially to create the interference therebetween so as to record a surface-relief hologram on the surface of the workpiece or an embedded hologram inside the workpiece in an irreversible manner. The present invention can solve a problem with a conventional process of recording a hologram in a non-photosensitive material in an irreversible manner using interfering femtosecond laser pulses, specifically, distortion in the waveforms of pulsed laser beams and resulting instability in recording of an embedded hologram due to a non-linear optical interaction between the femtosecond laser pulses and air/the material.
    • 公开了一种通过双光束激光干涉曝光工艺制造全息图的方法,其包括发射脉冲宽度(τ)范围从大于900飞秒到100皮秒的相干激光,激光功率为10μJ/脉冲 或更多,使用固态激光器作为光源,将来自激光器的光脉冲分成两束光束,以这样的方式控制两个光束,使得两个光束会聚在工件的表面上或内部,以便 记录全息图,同时在时间上和空间上彼此相互匹配两个光束的各个会聚点,以在它们之间产生干涉,以便以不可逆的方式在工件表面或工件内的嵌入全息图中记录表面浮雕全息图 。 本发明可以解决使用干涉飞秒激光脉冲以不可逆方式记录全息图的常规方法的问题,特别是脉冲激光束的波形失真以及嵌入式全息图记录中的不稳定性 由于飞秒激光脉冲和空气/材料之间的非线性光学相互作用。
    • 38. 发明申请
    • Method for producing hologram by pico-second laser
    • 通过微秒级激光产生全息图的方法
    • US20060019171A1
    • 2006-01-26
    • US10504634
    • 2003-02-13
    • Hideo HosonoMasahiro HiranoKenichi KawamuraTaisuke MiuraHayato Kamioka
    • Hideo HosonoMasahiro HiranoKenichi KawamuraTaisuke MiuraHayato Kamioka
    • G03H1/04
    • G02B5/1857G02B17/023G03H1/0244G03H1/04G03H2001/0413G03H2001/0415G03H2001/0482G03H2001/0484G03H2001/0491G03H2222/33G03H2223/26G03H2240/24G03H2260/62G03H2270/13G03H2270/52
    • Disclosed is a method of producing a hologram through a two-beam laser interfering exposure process, which comprises emitting a coherent laser light with a pulse width (τ) ranging from greater than 900 femtoseconds to 100 picoseconds and a laser power of 10 μJ/pulse or more using a solid-state laser as a light source, dividing the pulses light from the laser into two beams, controlling the two beams temporally and spatially in such a manner that the two beam are converged on a surface of or inside a workpiece for recording a hologram while matching the respective converged spots of the two beams with one another temporally and spatially to create the interference therebetween so as to record a surface-relief hologram on the surface of the workpiece or an embedded hologram inside the workpiece in an irreversible manner. The present invention can solve a problem with a conventional process of recording a hologram in a non-photosensitive material in an irreversible manner using interfering femtosecond laser pulses, specifically, distortion in the waveforms of pulsed laser beams and resulting instability in recording of an embedded hologram due to a non-linear optical interaction between the femtosecond laser pulses and air/the material.
    • 公开了一种通过双光束激光干涉曝光工艺制造全息图的方法,其包括发射脉冲宽度(τ)范围从大于900飞秒至100皮秒的相干激光,激光功率为10μJ/脉冲 或更多,使用固态激光器作为光源,将来自激光器的光脉冲分成两束光束,以这样的方式控制两个光束,使得两个光束会聚在工件的表面上或内部,以便 记录全息图,同时在时间上和空间上彼此相互匹配两个光束的各个会聚点,以在它们之间产生干涉,以便以不可逆的方式在工件表面或工件内的嵌入全息图中记录表面浮雕全息图 。 本发明可以解决使用干涉飞秒激光脉冲以不可逆方式记录全息图的常规方法的问题,特别是脉冲激光束的波形失真以及嵌入式全息图记录中的不稳定性 由于飞秒激光脉冲和空气/材料之间的非线性光学相互作用。