Lasing towards the VUV in the NIJI-IV FEL

被引：19

作者：

Yamada, K

Sei, N

Ohgaki, H

Mikado, T

Sugiyama, S

Yamazaki, T

机构：

[1] Quantum Radiat Div, Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

[2] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 445卷 / 1-3期

基金：

日本科学技术振兴机构;

关键词：

D O I：

10.1016/S0168-9002(00)00058-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The lasing wavelength in the NIJI-IV free electron laser (FEL) reached 212 nm in the deep ultraviolet (UV) range. Adoption of Al2O3/SiO2 multilayer mirrors to the laser cavity, whose light absorption loss is sufficiently small even below 220 nm, compared with HfO2/SiO2 usually used in the UV, was essential to shorten the wavelength in the deep UV range. The laser gain was estimated to be similar to 2% around 214 nm with a peak beam current of similar to 4A (average beam current of similar to 20 mA) from the measured loss of the cavity degraded after the lasing experiments which agreed well with an analytic gain calculation. Lasing in the vacuum ultraviolet (VUV) range is also expected even on the compact storage ring NIJI-IV with possible enhancement of the laser gain. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：173 / 177

页数：5

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