Quenching kinetics and small signal gain spectrum of the ZnI photodissociation laser

An excimer emitter with pumping by barrier discharge in mixtures of zink diiodide vapors with inert gases

“…At atmospheric pressure of the mixture, because of completeness of vibrational relaxation, transitions largely occur from lower vibrational levels of excited electron state. The width at half-height for ZnI(B → X) was in fact independent of the type of buffer gas employed and was 15 or 16 nm, which agrees with the results of [5], where optical pumping of a mixture of ZnI 2 /Ar by ArF laser radiation was employed. Also present in all spectra were atomic lines of zinc such as triplet 5s → 4p (468.0, 472.2, and 481.0 nm) and line 4d → 4p (636.2 nm) [10], and molecular iodine bands of which the most intense one was the band I 2 (D′ → A′) with a maximum at λ = = 342 nm [11].…”

“…Mixtures of zinc diiodide vapors with inert gases may provide advanced working mixtures for developing environmentally benign sources of visible radiation [3][4][5]. The optical and electrical characteristics of radiation of gas-discharge plasma of barrier discharge in such multicomponent mixtures were not investigated.…”

Electronic structure with dipole moment calculation of the low-lying electronic states of the molecule ZnI

“…The calculations have been done by using two different configurations such that the active space in the first configuration contains 6σ (Zn: 4p 0 , 5s, 4d 0 ; I: 5p 0 , 6s, 7s), 3π (Zn: 4p 7 1 , 4d 7 1 ; I: 5p 7 1 ) and 1δ (Zn: 4d 7 2 ) orbitals in the C 2v symmetry. This active space is distributed into irreducible representations as 7a 1 , 3b 1 , 3b 2 , 1a 2 and noted by [7,3,3,1], whereas the active space of the second configuration contains 5σ (Zn: 4s, 4p 0 , 5s; I: 5p 0 , 6s) and 2π (Zn: 4p 7 1 ; I: 5p 7 1 ) orbitals noted by [5,2,2,0]. In the range of the internuclear distance R around the equilibrium position of its ground state, the ZnI molecule is assumed mainly ionic.…”

“…The demonstration of the blue-green lasing on the B 2 Σ þ -X 2 Σ þ transition of mercury mono-halides [1][2][3][4][5] and the analogous transitions of ZnI and CdI [6][7][8] have motivated subsequent studies to be carried out on such laser systems and their composing molecules. Lipson and his coworker [9] presented the fluorescence excitation spectra of ZnI from which the potential energy curves of the three lowlying spin-orbit states and the equilibrium bond length of the B 2 Σ þ state were reported.…”

Theoretical electronic structure of the cadmium monohalide molecules CdX (X = F, Cl, Br, I)

“…The analogy between the transitions of ZnI and CdI [8][9][10][11] and those that are demonstrated on the bluegreen lasing on the transition between B 2 Σ + -X 2 Σ + of mercury mono-halides [12][13][14][15][16] inspired studies on the composing molecules of such laser systems. Inspired by the similarity between the valence electronic structure of cadmium monohalides and the first exploratory laser-cooled SrF diatomic 17,18 with the 3d orbitals fully occupied, we are encouraged to investigate the low-lying electronic states of cadmium monohalides.…”