PARTIALLY COHERENT-LIGHT GENERATED BY USING SINGLE AND MULTIMODE OPTICAL FIBERS IN A HIGH-POWER ND-GLASS LASER SYSTEM

被引：62
|
作者：
NAKANO, H [1 ]
MIYANAGA, N [1 ]
YAGI, K [1 ]
TSUBAKIMOTO, K [1 ]
KANABE, T [1 ]
NAKATSUKA, M [1 ]
NAKAI, S [1 ]
机构：
[1] OSAKA UNIV,INST LASER ENGN,SUITA,OSAKA 565,JAPAN
来源：
APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 05期
关键词：
D O I：
10.1063/1.109955
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A simple and flexible method is presented for generating a partially coherent light which obtains the highly smooth focused beam pattern. The beam divergence of 32 times diffraction limited light having a spectral width of 1.6 nm has been easily and reproducibly achieved by injecting a laser pulse from an actively mode-locked Nd:YLF oscillator to a single mode optical fiber, coupled to a multimode optical fiber. Temporal evolution of the beam smoothing due to the induced incoherency was examined with temporally resolved measurements of the beam pattern. The partially coherent light was focused through a random phase plate after the amplification. Small-scale intensity perturbation in a focused beam pattern was greatly reduced.
引用
收藏
页码：580 / 582
页数：3
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