NDLI: Ultra-high-precision mid-IR spectrometer II: system description and spectroscopic performance

Content Provider	Springer Nature Link
Author	Weibring, P. Richter, D. Fried, A. Walega, J.G. Dyroff, C.
Copyright Year	2006
Abstract	The development and spectroscopic performance evaluation of an ultra-sensitive, mid-IR spectrometer is reported. The laser system is based upon difference-frequency generation (DFG) at ∼3.5 μm by mixing a DFB diode laser at 1562 nm and a DFB fiber laser at 1083 nm using a periodically poled LiNbO3 crystal. DFG radiation was coupled to a 100 m optical path length astigmatic Herriott cell. Sensitive and selective spectroscopic detection of formaldehyde was performed with second-harmonic detection using Peltier-cooled HgCdTe detectors. By applying computer lock-ins, dual-beam optical noise subtraction, focus matching, thermal stabilization, active wavelength control, and advanced signal processing a sensitivity corresponding to an absorbance ∼1.6×10-7 is achieved for 260 s of averaging.
Starting Page	207
Ending Page	218
Page Count	12
File Format	PDF
ISSN	09462171
Journal	Applied Physics B
Volume Number	85
Issue Number	2-3
e-ISSN	14320649
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-06-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physics and Applied Physics in Engineering Optical Spectroscopy, Ultrafast Optics Quantum Optics, Quantum Electronics, Nonlinear Optics Laser Technology and Physics, Photonics Physical Chemistry Electromagnetism, Optics and Lasers
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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