Influence of the active zone diameter, on the UV-ion Ne-CuBr laser performance

Vuchkov, N.K.; Temelkov, K A; Zahariev, P.V.; Sabotinov, Nikola V.

doi:10.1109/3.970900

Cited by 20 publications

(27 citation statements)

References 11 publications

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“…The 248.6-nm lower level 4p 3F°2 is mainly depopulated by UV spontaneous emission to the Cu metastable levels 4s 3D,2,3, and is populated by Penning impacts between neon metastables and ground state copper atoms. The high population of the Cu metastable levels leads to an increase of the lower laser level population by radiative trapping [4,2]. The lower laser level 4p 3F°2 is additionally populated via radiative decay of 5s 3D2,3 (Fig.…”

Section: Kinetic Studymentioning

confidence: 97%

“…The terms with the rate constants k and 1' present the excitation and deexcitation via electron impacts. The terms with the rate constant B in (1) and (2) present the upper laser level depopulation and the lower laser level population via stimulated emission, where p is the photon density, and AN = N3 -(g3/g2).N2 is the inversion population. The expressions with the probability A describe the population and depopulation of the respective levels by spontaneous radiative transitions.…”

Section: Kinetic Studymentioning

confidence: 99%

“…In both investigations the copper atoms are produced by an electron impact dissociation ofthe CuBr molecules during the discharge period. In [2] it is also shown that the presence of Br atoms in the discharge leads to a reduction of the Ne metastables density via Penning ionization and, hence, to a Cu metastables density decrease and an increase of the output laser power. It is assumed that the reduction of the inside tube diameter could lead to a Ne and Cu metastables decay and hence to a considerable increase of the inversion population and the output parameters of the UV Cu lasers.…”

Section: Introductionmentioning

confidence: 96%

“…With an improved discharge tube design average output powers of 270 mW at multiline output and of 210 mW on the 248. 6 nm line have been obtained in [2]. It was shown in [2] that the lower level population ofthe 248.6-nm laser line depends strongly on the Ne and Cu metastables concentration.…”

Section: Introductionmentioning

confidence: 97%

“…6 nm line have been obtained in [2]. It was shown in [2] that the lower level population ofthe 248.6-nm laser line depends strongly on the Ne and Cu metastables concentration. In both investigations the copper atoms are produced by an electron impact dissociation ofthe CuBr molecules during the discharge period.…”

Section: Introductionmentioning

confidence: 97%

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Kinetic and experimental study on the influence of the inside tube diameter on the UV ion Ne-CuBr laser output parameters

et al. 2002

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A simplified model, describing the kinetic processes in a nanosecond pulsed longitudinal Ne-CuBr discharge afterglow, is made. It is shown that the influence of the active zone diameter decrease on the inversion population and hence on the output power and the laser pulse on the 248.6 nm line is due to the more effective population of the upper laser level, because of the higher neon ion density and mainly because of the more effective depopulation of the lower laser level. Optimal discharge conditions for UV laser operation are found for different active zone diameters of the laser tube -12 aim, 9.5 mm, 9 mm, 8 mm, 5.8 mm, 5.7 mm, 5.2 mm and 4 mm. With diameter reduction a record average laser power of 1 .3 W is obtained at multiline output. The highest peak pulse and average output powers are measured on the 248.6-nm laser line for the UV Cu lasers -3.25 W and 0.85 W, respectively. The obtained specific average laser power is 56.6 mW.cm3 at an active volume of23 cm3.

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Section: Kinetic Studymentioning

confidence: 97%

Section: Kinetic Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%