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THIS: a tuneable heterodyne infrared spectrometer.
Wirtz D, Sonnabend G, Schieder RT. Wirtz D, et al. Among authors: sonnabend g. Spectrochim Acta A Mol Biomol Spectrosc. 2002 Sep;58(11):2457-63. doi: 10.1016/s1386-1425(02)00062-8. Spectrochim Acta A Mol Biomol Spectrosc. 2002. PMID: 12353696
Fully reflective external-cavity setup for quantum-cascade lasers as a local oscillator in mid-infrared wavelength heterodyne spectroscopy.
Stupar D, Krieg J, Krötz P, Sonnabend G, Sornig M, Giesen TF, Schieder R. Stupar D, et al. Among authors: sonnabend g. Appl Opt. 2008 Jun 1;47(16):2993-7. doi: 10.1364/ao.47.002993. Appl Opt. 2008. PMID: 18516117
Tuneable Heterodyne Infrared Spectrometer for atmospheric and astronomical studies.
Sonnabend G, Wirtz D, Schmülling F, Schieder R. Sonnabend G, et al. Appl Opt. 2002 May 20;41(15):2978-84. doi: 10.1364/ao.41.002978. Appl Opt. 2002. PMID: 12027188
Evaluation of quantum-cascade lasers as local oscillators for infrared heterodyne spectroscopy.
Sonnabend G, Wirtz D, Schieder R. Sonnabend G, et al. Appl Opt. 2005 Nov 20;44(33):7170-2. doi: 10.1364/ao.44.007170. Appl Opt. 2005. PMID: 16318188
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