Browsing by Subject "Laser beams -- Measurement"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item A New Single Mode Tunable TEA Laser(Texas Tech University, 1980-05) Dougal, Roger AdelbertA simple and inexpensive technique for producing a single mode TEA CO2 laser is explored. The method involves the use of an intracavity selective absorber. A large laser system used in the early research was observed to yield 1.1 J single longitudinal mode pulses. This amounted to 73% of the multimode pulse energy. This encouraging result led to the design of a stabilized, tunable laser system. The laser frequency is smoothly tunable over some tens of megahertz, and stepwise tunable across the entire gain bandwidth of any particular line. The system includes a frequency reference laser so that precise knowledge of the TEA laser frequency with respect to line center is possible. Both lasers are grating tunable to any of the CO^ rotational transitions in the 9 to 11 micron region. The TEA laser exhibits an output energy of 200 millijoules in a single mode pulse/ the absolute frequency of which is known within 5 MHz.Item New infrared noble gas laser transitions between 3 microns and 18 microns(Texas Tech University, 1979-12) Brown, Eddie LeeNineteen new infrared laser transitions observed in Kr, Ar and Xe ranging from 3.631u to 17.233y are reported and identification of all but one of these transitions has been made. An identification of a previously observed but unidentified transition is given along with a method for assigning term assignment to observed transitions. The design and construction of a high power noble gas laser capable of operating at gas pressures as low as 5y and electric currents as high as 2KA is discussed.