Progress towards laboratory frequency standards for the optical communication bands

Details Progress towards laboratory frequency standards for the optical communication bands Progress towards laboratory frequency standards for the optical communication bands

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340..531k&link_type=abstract

In ESA, Frequency and Time Forum p 531-536 (SEE N93-24978 09-70)

Physics

Frequency Measurement, Frequency Standards, Helium-Neon Lasers, Optical Communication, Experimentation, Gas Discharge Tubes, Hollow Cathodes, Laser Cavities

Scientific paper

Some frequency reference points in the 1.5 micrometer optical communication band are reviewed, and experimental results on frequency references for the 1.52 micrometers He-Ne laser are presented. A 15-NH3 absorption within the tuning range of the laser is found to be weak and not saturable. A diode laser was used to investigate to 1.52 micrometers Ne transition observed via the optogalvanic effect in a hollow cathode discharge. Using a similar discharge tube intracavity in a He-Ne laser, optogalvanic saturated absorption dips of about 6 were found in 20-Ne discharges at about 1 torr (133 Pa) pressure. The full width at half maximum was about 100 MHz.

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