Discovery and characterization of optically pumped far-infrared laser emissions using laser magnetic resonance spectroscopy |
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| Authors: | M Jackson LR Zink J Flores-Mijangos A Robinson JM Brown |
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| Institution: | (1) Department of Physics, University of Wisconsin-La Crosse, La Crosse, WI 54601, USA;(2) Instituto de Ciencias Nucleares, UNAM, D.F., Mexico, Mexico;(3) Department of Chemistry, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK |
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| Abstract: | A laser magnetic resonance spectrometer has been used to discover and subsequently measure a far-infrared laser emission:
the 166.6-micron line of CH2F2, optically pumped by the 9P24 CO2 laser. By recording spectra for the NH radical, the frequency of this laser emission has been determined to be 1799950±13 MHz.
Spectra for the NH radical were also recorded with two other far-infrared laser emissions: the 160.4-micron line of N2H4 (9P46 CO2 pump) and the 328.6-micron line of 13CH3OH (9P12 CO2 pump). From the NH spectra, a discrepancy of 2.1 GHz with the previously measured laser frequency was identified for the
160.4-micron line. A three-laser heterodyne system was then used to remeasure the frequency to be 1868475.5±0.5 MHz. The NH
spectra were also used to determine the frequency for the 328.6-micron line to be 912366±7 MHz, in agreement with the value
previously calculated from the Rydberg–Ritz combination principle.
PACS 07.57.Hm; 32.60.+i; 42.62.Eh |
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