• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Annual solid state and diode laser technology review;SSDLTR 2009; 20090629-0702;20090629-0702; Newton, MA(US);Newton, MA(US) >Patterned Disorder in a Fiber Laser Array Improves Coherence
【24h】

Patterned Disorder in a Fiber Laser Array Improves Coherence

机译：光纤激光器阵列中的图案化无序改善了相干性

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Laser arrays offer an alternative pathway to generate a high-power source. There is particular interest in generating coherent, in-phase emission from the laser outputs since the brightness at broadside increases as the square of the number of lasers instead of linearly if the lasers are incoherent. There has been increasing interest in using fiber lasers as array elements due to their efficient operation at high powers. Phase-locked output has been reported in fiber arrays using a spatial filter [1], a self-Fourier cavity [2], multicore fiber [3], fused-tapered fiber couplers [4,5], and a fiber loop coupler [6]. Coherent output from fiber arrays is remarkable at first glance since the long cavity lengths (～10 m) allow access to thousands of longitudinal modes. The fiber lasers self-select only a small percentage of modes that optimize light regeneration in an array configuration, even under nonidentical operation. For instance, in a mutually coupled array, if one laser's output transmits less than the other lasers, then the laser emits a large share of light from this single output [7,8]. In a seven-laser array with identical losses, greater coherence was achieved when two laser elements were turned off [5]. Theoretical studies have shown similar benefits of nonuniformity [9,10].
机译：激光阵列提供了另一种产生高功率光源的途径。从激光器输出产生相干的同相发射尤其令人感兴趣，因为宽边的亮度随激光器数量的平方而增加，而不是在激光器不相干时呈线性增长。由于光纤激光器在高功率下的有效运行，因此人们越来越关注使用光纤激光器作为阵列元件。在使用空间滤波器[1]，自傅里叶腔[2]，多芯光纤[3]，锥形光纤耦合器[4,5]和光纤环路耦合器[ 6]。乍一看，光纤阵列的相干输出非常出色，这是因为较长的腔体长度（约10 m）可以访问数千种纵向模式。光纤激光器即使在不相同的操作下，也只能自行选择一小部分模式，以优化阵列配置中的光再生。例如，在相互耦合的阵列中，如果一个激光器的输出比其他激光器的透射率要低，则该激光器会从该单个输出中发射很大份额的光[7,8]。在具有相同损耗的七激光阵列中，当两个激光元件关闭时，可以获得更大的相干性[5]。理论研究表明，不均匀性也有类似的好处[9,10]。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号