3-DIMENSIONAL SIMULATION OF LITTROW-GRATING SIDE-BAND SUPPRESSION IN A 10-KW FREE-ELECTRON LASER

被引：0
作者：
QUIMBY, DC [1 ]
PARAZZOLI, CG [1 ]
PISTORESI, DJ [1 ]
机构：
[1] BOEING DEF & SPACE GRP,SEATTLE,WA 98124
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 341卷 / 1-3期
关键词：
D O I：
10.1016/0168-9002(94)90368-9
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The Average Power Laser Experiment (APLE) is a 10 kW free-electron laser (FEL) oscillator operating at 10 mum. Sideband control is required for optimal tapered-undulator power extraction. Sideband suppression with a 10 lines/mm Littrow grating on one of the cavity end mirrors is examined using a full three-dimensional, time-dependent numerical simulation. The relevant 3-D physical aspects including optical pulse stretching, angular wavelength dispersion, losses at apertures in the resonator, and differential head-to-tail steering of the optical micropulse are examined. The grating restores near-ideal power output and a near transform-limited optical spectrum. Littrow grating operation increases the sensitivity of the FEL to changes in e-beam energy, thus establishing an important tolerance for the allowable energy fluctuation level.
引用
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页码：293 / 299
页数：7
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