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Frequency Lock of an Optically Pumped FIR Ring Laser at 803 and 1626 GHz (1999)

Michael, E. ; Lewen, F. ; Gendriesch, R. ; [et al.]

Springer

International journal of infrared and millimeter waves 20 (1999), S. 1073-1083

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ISSN: 1572-9559

Keywords: frequency stabilization of FIR lasers ; high resolution THz spectroscopy ; far infrared (FIR) ring lasers

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract We report an automatic frequency control (AFC) for an optically pumped far infrared (FIR) ring laser applicable for high resolution THz sideband spectroscopy by mixing a fraction of the laser power and a harmonic of a phase-locked synthesizer on a planar Schottky diode. We achieve a relative frequency accuracy of about 0.5 kHz rms at 803 GHz ( 15 NH 3 ) and about 1 kHz rms at 1626.6 GHz (CH 2 F 2 ) over hours of lock time. The absolute frequency accuracy is estimated to be about 5 kHz at 1626.6 GHz.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1021764204367

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