Enhanced harmonic generation using different second-harmonic sources for the two-color pump of extended laser-produced plasmas

被引：22
|
作者：
Ganeev, R. A. [1 ,2 ]
Suzuki, M. [1 ]
Kuroda, H. [1 ]
机构：
[1] Saitama Med Univ, Ophthalmol & Adv Laser Med Ctr, Saitama 3500495, Japan
[2] Voronezh State Univ, Voronezh 394006, Russia
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2014年 / 31卷 / 04期
关键词：
ATTOSECOND PULSE GENERATION; IONS;
D O I：
10.1364/JOSAB.31.000911
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Studies of high-order harmonic generation using single-color and two-color pumps of the long plasmas produced on various metal surfaces are presented using different sources of second-harmonic pump. We apply the barium borate (BBO) crystals of different thickness to manipulate the pump intensity ratios and the overlapping of two pumps in the plasma area. Different relations between the delays and intensities of these pumps allowed the definition of the optimal length of BBO for the efficient generation of even and odd harmonics using targets possessing various ablation properties. The 50x enhancement of odd and even harmonics was achieved in the case of the two-color pump compared with the single-color pump of silver plasma. (C) 2014 Optical Society of America
引用
收藏
页码：911 / 918
页数：8
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