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    • 1. 发明专利
    • Method and apparatus for changing laser pulse length
    • 改变激光脉冲长度的方法和装置
    • JP2009076906A
    • 2009-04-09
    • JP2008237413
    • 2008-09-17
    • Schott Agショット アクチエンゲゼルシャフトSchott AG
    • BURKERT ALFONSBERGMANN JOACHIMTRIEBEL WOLFGANGNATURA UTE
    • H01S3/10B23K26/06B23K26/067B23K26/18
    • H01S3/0057H01S3/101H01S3/225Y10S372/70
    • PROBLEM TO BE SOLVED: To provide a method and apparatus for generating laser pulses of various different pulse lengths or pulse duration times, from a single incidence laser pulse of a predetermined length so as to be adaptable in a simple and quick manner to various different laser systems and/or different applications. SOLUTION: The apparatus 10, 20 for changing the length or duration time of an incident laser pulse includes at least one beam splitter 1, 11, 21 for dividing the incident laser pulse into a first partial pulse and a second partial pulse, and a plurality of reflecting mirrors, arranged so as to guide the first partial pulse along a delay propagation route 2, 12, 22 by making the first partial pulse bend. At least one beam splitter 1, 11, 21 can be shifted to an engaging position G or to a non-engaging position N. When the beam splitter is at the non-engaging position N, the splitter is positioned outside the laser beam propagation path 4, and when the splitter is at the engaged position G, the splitter is positioned inside the laser beam propagation path 4. COPYRIGHT: (C)2009,JPO&INPIT
    • 解决的问题:提供从预定长度的单次入射激光脉冲产生各种不同脉冲长度或脉冲持续时间的激光脉冲的方法和装置,以便以简单和快速的方式适应 各种不同的激光系统和/或不同的应用。 解决方案:用于改变入射激光脉冲的长度或持续时间的装置10,20包括至少一个用于将入射激光脉冲分成第一部分脉冲和第二部分脉冲的分束器11,21, 以及多个反射镜,被布置成通过使第一部分脉冲弯曲而沿着延迟传播路径2,12,22引导第一部分脉冲。 至少一个分束器1,11,21可以移动到接合位置G或非接合位置N.当分束器处于非接合位置N时,分束器位于激光束传播路径的外部 如图4所示,并且当分离器处于接合位置G时,分离器位于激光束传播路径4内。版权所有(C)2009,JPO&INPIT
    • 9. 发明专利
    • Wavelength variable resonator, wavelength variable laser, optical module and control method thereof
    • 波长可变谐振器,波长变化激光器,光学模块及其控制方法
    • JP2006245346A
    • 2006-09-14
    • JP2005059641
    • 2005-03-03
    • Nec Corp日本電気株式会社
    • YAMAZAKI HIROYUKI
    • H01S3/083H01S5/14
    • G02F1/0147G02B6/12007G02F1/011G02F2203/15H01S3/106H01S5/0064H01S5/02216H01S5/02248H01S5/02284H01S5/02446H01S5/142Y10S372/70
    • PROBLEM TO BE SOLVED: To realize high reliability, high performance and low cost, and perform wavelength monitoring with a simpler configuration by overcoming problems in a conventional wavelength variable laser.
      SOLUTION: A wavelength variable laser 10 is provided with a multiple ring resonator 20 in which ring resonators 21-23 having different optical path lengths are coupled with each other; input/output side waveguide 12 connected to the ring resonator 21; reflector side waveguide 14 connected to the ring resonator 23; PLC substrate 15 on which the resonator 20, the waveguide 12 and the waveguide 14 are formed; high reflection film 16 provided on the waveguide 14; SOA 17 connected to the waveguide 12; film-like heaters 22h, 23h and a phase control region 171 of the SOA 17 for changing the resonant wavelength of the resonator 20; and light-receiving element 21p for detecting the resonant wavelength of the resonator 20 in a through port 11t of a directional coupler 11.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了实现高可靠性,高性能和低成本,并且通过克服常规波长可变激光器中的问题,以更简单的配置执行波长监测。 解决方案:波长可变激光器10设置有多环谐振器20,其中具有不同光程长度的环形谐振器21-23彼此耦合; 连接到环形谐振器21的输入/输出侧波导12; 连接到环形谐振器23的反射器侧波导14; 其上形成有谐振器20,波导12和波导14的PLC基板15; 设置在波导14上的高反射膜16; 连接到波导12的SOA 17; 用于改变谐振器20的谐振波长的SOA 17的薄膜状加热器22h,23h和相位控制区域171; 以及用于检测定向耦合器11的通孔11t中谐振器20的谐振波长的光接收元件21p。版权所有(C)2006,JPO&NCIPI