Title :
Frequency measurements of optically pumped far-infrared laser lines
Author :
Telles, E.M. ; Scalabrin, A. ; Pereira, D.
Author_Institution :
Inst. de Fisica Gleb Wataghin, Univ. Estadual de Campinas, Sao Paulo, Brazil
fDate :
4/1/1995 12:00:00 AM
Abstract :
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
Keywords :
frequency measurement; gas lasers; infrared sources; laser beams; laser cavity resonators; laser variables measurement; multiwave mixing; optical modulation; optical pumping; organic compounds; CO2; CO2 waveguide pump lasers; FIR laser frequencies; FIR laser line frequencies; FIR laser radiation mixing; FIR laser systems; Fabry-Perot FIR laser cavities; MIM diode; average fractional frequency reproducibility; frequency measurements; heterodyne technique; metal-insulator-metal point contact tunnel diode; methanol; microwave radiation; optically pumped far-infrared laser lines; Diodes; Finite impulse response filter; Frequency measurement; Laser excitation; Masers; Optical mixing; Optical pumping; Optical waveguides; Pump lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
