Improved hollow-core photonic crystal fiber design for delivery of nanosecond pulses in laser micromachining applications

被引：44
|
作者：
Shephard, JD [1 ]
Couny, F
Russell, PS
Jones, JDC
Knight, JC
Hand, DP
机构：
[1] Heriot Watt Univ, Appl Opt & Photon Grp, Edinburgh EH14 4AS, Midlothian, Scotland
[2] Univ Bath, Dept Phys, Optoelect Grp, Bath BA2 7AY, Avon, England
来源：
APPLIED OPTICS | 2005年 / 44卷 / 21期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1364/AO.44.004582
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the delivery of high-energy nanosecond pulses (similar to 65 ns pulse width) from a high-repetition-rate (up to 100 kHz) Q-switched Nd:YAG laser through the fundamental mode of a hollow-core photonic crystal fiber (HC-PCF) at 1064 nm. The guided mode in the HC-PCF has a low overlap with the glass, allowing delivery of pulses with energies above those attainable with other fibers. Energies greater than 0.5 mJ were delivered in a single spatial mode through the hollow-core fiber, providing the pulse energy and high beam quality required for micromachining of metals. Practical micromachining of a metal sheet by fiber delivery has been demonstrated. (c) 2005 Optical Society of America.
引用
收藏
页码：4582 / 4588
页数：7
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