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Frequency measurements of optically pumped far-infrared laser lines

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3 Author(s)
Telles, E.M. ; Inst. de Fisica Gleb Wataghin, Univ. Estadual de Campinas, Sao Paulo, Brazil ; Scalabrin, A. ; Pereira, D.

In this work, we report the frequency measurements of optically pumped far-infrared (FIR) laser lines. We use the heterodyne technique of mixing FIR laser radiation and microwave radiation on a metal-insulator-metal (MIM) point contact tunnel diode, to determine the FIR laser frequencies. The two FIR laser systems, consisting of CO2 waveguide pump lasers and Fabry-Perot FIR laser cavities, and MIM diode were developed by us. To check the system, we have measured some FIR laser line frequencies previously reported in the literature. An average fractional frequency reproducibility of ±7×10-7, between our measurements and the previous ones, permit us to use our system to measure five new FIR laser frequencies

Published in:

Quantum Electronics, IEEE Journal of  (Volume:31 ,  Issue: 4 )