红外高强度激光产生的真空紫外 Ar*2 的放大特性。

Amplification properties of vacuum ultraviolet Ar*2 produced by infrared high-intensity laser.

机构信息

Department of Electrical and Electronic Engineering and Photon Science Center, University of Miyazaki, Gakuen Kibanadai Nishi 1-1, Miyazaki 889-2192, Japan.

出版信息

Opt Lett. 2011 Jul 15;36(14):2719-21. doi: 10.1364/OL.36.002719.

DOI:10.1364/OL.36.002719

PMID:21765520

Abstract

We report optical amplification of Ar(2)* at 126 nm, pumped by optical-field-induced ionization (OFI) created by an infrared high-intensity laser. A gain-length product of 0.84 was obtained by using multipass amplification with a vacuum ultraviolet (VUV) cavity. The gain-length product was increased up to 4.3 through the use of single-pass amplification with a VUV reflector and a hollow 5.0 cm-long fiber. Similar small signal gain coefficients of 0.84 and 0.86 cm(-1) were obtained in two different experiments, in which OFI Ar plasma gain media were produced in free space filled with Ar and inside an Ar-filled hollow fiber.

摘要

我们报告了在 126nm 处的 Ar(2)*光放大，该光放大由红外高强度激光产生的光场感应电离（OFI）泵浦。通过使用真空紫外（VUV）腔的多通放大获得了 0.84 的增益-长度乘积。通过使用 VUV 反射镜和 5.0cm 长的空心光纤进行单通放大，增益-长度乘积增加到 4.3。在两个不同的实验中，分别在充满 Ar 的自由空间中和在充满 Ar 的空心光纤内产生了 OFI Ar 等离子体增益介质，得到了相似的小信号增益系数 0.84 和 0.86cm(-1)。