Stimulated emission of inert gas mixtures in the VUV range

Amplifying the VUV radiation of atomic nitrogen in helium, argon, krypton, and xenon

“…This feature of the method has been discussed in a number of publications. [6][7][8][9][10][11][12] This phenomenon was demonstrated for the first time in Ref. 9.…”

“…Further studies made it possible to formulate the conditions for obtaining time-continuous stimulated VUV emission and to implement it experimentally. [6][7][8] An approach based on introducing narrow-band controlling radiation (an initiating injection signal) into the amplifying laser system played an important role in achieving this goal. This approach has become known in the literature as the "injection seeding (locking) method," with the lasing parameters of the laser system.…”

VUV emission spectra from binary rare gas mixtures near the resonance lines of Xe I and Kr I

“…There are two other contributions to the red wing close to the resonance lines. One of them is from boundbound transitions between vibrational levels of the excited weakly bound state and vibrational levels of the ground state of the heteronuclear molecule (see our earlier publications [10][11][12] concerning Kr-Xe emission). These are probably the transitions that form the intense shoulders close to the resonance lines in the emission profiles.…”

“…High resolution VUV emission spectra of bands near the resonance lines of the admixtures with reliable identification of the structures have not yet been presented for binary rare gas mixtures. To our knowledge, only limited information exists on the band structures for some mixtures: Ne-Xe in [9] and Kr-Xe in [10][11][12]. In this paper we report emission spectra from capillary DC glow discharges of Xe-X and Kr-Y mixtures (X = He, Ne, Ar, Kr and Y = He, Ne, Ar) near the first and second resonance lines of Xe (146.961 and 129.559 nm) and Kr (123.584 and 116.487 nm).…”

“…In our previous studies [10][11][12] we have presented a possible identification of such VUV spectra from Kr-Xe mixtures. It was shown that transitions between KrXe molecules in the weakly bound excited state 1( 3 P 1 ) and the ground state could be responsible for the strong emission (and absorption) in the vicinity of the Xe resonance line at ∼147 nm, while transitions between the more strongly bound state 0 + ( 3 P 1 ) and the repulsive part of the ground state contribute to the broad low intensity continuum extending from the resonance line to longer wavelengths.…”