STATUS OF THE DARMSTADT NEAR-INFRARED FREE-ELECTRON LASER PROJECT

被引：9

作者：

ALRUTZZIEMSSEN, K

AUERHAMMER, J

GENZ, H

GRAF, HD

RICHTER, A

TOPPER, J

WEISE, H

机构：

[1] Institut für Kernphysik, Technische Hochschule Darmstadt, W-6100 Darmstadt

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1991年 / 304卷 / 1-3期

关键词：

D O I：

10.1016/0168-9002(91)90840-M

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

At the new superconducting 130 MeV electron accelerator, S-DALINAC, a free electron laser in the near-infrared region is presently under construction. It is intended to make use of an electron beam variable in energy between 35 and 50 MeV, a hybrid undulator (K greater-than-or-equal-to 1.2; lambda-u = 3.2 cm) constructed in the wedged pole configuration with 80 periods achieving a peak magnetic field on axis in excess of 0.4 T, and a nearly concentric optical cavity consisting of two spherical dielectric mirrors of 75 mm diameter separated by 15 m and mounted inside vacuum chambers. With this setup it will become possible to cover a wavelength region in the near infrared from 2.8-5.7-mu-m. The FEL will be operating continuously generating laser pulses of 1.9 ps duration at a repetition rate of 10 MHz. According to simulations the output peak power amounts to several hundred kilowatts. The properties of the FEL radiation will be unique regarding the region of wavelength, tunability, pulse time structure and cw mode. First experiments are expected to be carried out in 1991.

引用

页码：159 / 162

页数：4

共 11 条

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