NDLI: Review of the frequency stabilization of tea co2 laser oscillators

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Review of the frequency stabilization of tea co2 laser oscillators

Content Provider	NASA Technical Reports Server (NTRS)
Author	Willetts, David V.
Copyright Year	1987
Description	Most applications of TEA CO2 lasers in heterodyne radar systems require that the transmitter has a high degree of frequency stability. This ensures good Doppler resolution and maximizes receiver sensitivity. However, the environment within the device is far from benign with fast acoustic and electrical transients being present. Consequently the phenomena which govern the frequency stability of pulsed lasers are quite different from those operative in their CW counterparts. This review concentrates on the mechanisms of chirping within the output pulse; pulse to pulse frequency drift may be eliminated by frequency measurement and correction on successive pulses. It emerges that good stability hinges on correct cavity design. The energy-dependent laser-induced frequency sweep falls dramatically as mode diameter is increased. Thus, it is necessary to construct resonators with good selectivity for single mode operation while having a large spot size.
File Size	1458043
Page Count	11
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870011090
Archival Resource Key	ark:/13960/t3033r326
Language	English
Publisher Date	1987-04-01
Access Restriction	Open
Subject Keyword	Lasers And Masers Tea Lasers Chirp Heterodyning Carrier Waves Doppler Radar Pulsed Lasers Oscillators Frequency Stability Carbon Dioxide Lasers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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