MicroWave Spectroscopy Laboratory

Instruments The Lamb-dip spectrometer

The Lamb-dip spectrometer

Broadband cavity-less video spectrometer operating at mm-submm wave lengths has been put into operation in the year of 2012. The spectrometer allows observation of narrow non-linear molecular absorption resonances (Lamb-dips) having minimum width of about 5 kHz (FWHM) and measurements of their frequencies with the accuracy better than 1 kHz. The spectrometer is destined for highly accurate investigation of intramolecular interactions by studies of hyperfine structure of observed molecular transitions.

The spectrometer block-diagram

More details are presented in Ref. 8 (2012), Ref. 11 (2013) and Ref. 4 (2015).

Examples of spectra.

   Institute of Applied Physics of the Russian Academy of Sciences
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