High-power lasing on the Ne i 540.0-nm line in electron beam generated plasmas

Ono, K.; Oomori, T.; Fujita, S.
August 1986
Applied Physics Letters;8/4/1986, Vol. 49 Issue 5, p239
Academic Journal
Self-terminating lasing at megawatt power levels was observed on the Ne i 540.0-nm line under longitudinal electron beam excitation. A 700-kV, 12-kA, 50-ns electron beam was injected into a stainless-steel drift tube, 175 cm long and 13.4 cm in inner diameter, filled with neutral neon gas in the pressure range 0.1≤P0≤100 Torr. The drift tube was immersed in an axial magnetic guide field in the range 0≤B0≤4.2 kG. Lasing was found to occur for P0>=3 Torr, in the amplified spontaneous emission mode of operation. A maximum output pulse energy of ∼2 mJ was obtained for P0=100 Torr and B0=4.2 kG, corresponding to a peak power of ∼1 MW with an output pulse of ∼2 ns full width at half-maximum.


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