Compact frequency-comb Fourier-transform infrared spectrometer

被引:2
|
作者
Ganz, T.
von Ribbeck, H. G.
Brehm, M.
Keilmann, F. [1 ]
机构
[1] Max Planck Inst Biochem, D-82152 Munich, Germany
关键词
D O I
10.1016/j.optcom.2008.03.071
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate a Fourier-transform infrared (FTIR) spectrometer without moving parts based on frequency-combs where the interference of two coherent frequency-comb beams occurs via wavefront combination, thereby eliminating the need of a dielectric combiner. This enables dispersionless operation over eventually the complete THz-to-visible spectrum in a single instrument. Furthermore we demonstrate the use of a single GaSe crystal for generating both beams, in an implementation for the 22-36 THz mid-infrared range. Spurious cross-modulation effects and a way to eliminate them are. experimentally demonstrated. The compact comb-FTIR can be equally well applied for spectroscopic microscopy as for long-path standoff chemical monitoring. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:3827 / 3830
页数:4
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